Try Out Ujian Nasional 2014 - IPA

The correct answer is "its presence does not disturb the neighbourhood." This is because the passage suggests that keeping pet dogs in the city is not a problem as long as they do not cause any disturbance to the neighborhood. This implies that the presence of the dogs should not create any issues or disruptions for the people living nearby.

The correct answer is 144 because when 32 is multiplied by 4, the result is 128, which is less than 144. However, when 32 is multiplied by 5, the result is 160, which is greater than 144. Therefore, the largest possible value for x that satisfies the equation is 4, resulting in 32 multiplied by 4 equaling 144.

The given arithmetic sequence consists of 21 terms. The middle term of the sequence is 52. Additionally, the sum of the 3rd, 5th, and 15th terms of the sequence is 106. To find the 7th term of the sequence, we can use the formula for the nth term of an arithmetic sequence: An = A1 + (n-1)d. Using this formula, we can substitute the given information into the equation and solve for the 7th term. The answer is 32.

The upper quartile is the value that separates the top 25% of the data from the rest. In this case, the data is given in a frequency table, where each range of values has a corresponding frequency. To find the upper quartile, we need to determine the cumulative frequency that corresponds to the 75th percentile.

By adding up the frequencies, we find that the cumulative frequency at the 75th percentile is 30. The corresponding value in the table is in the range of 70-79, which has a lower limit of 70. To find the upper quartile, we use the formula:

Upper Quartile = Lower Limit + (Cumulative Frequency - Previous Cumulative Frequency) * Range / Frequency

In this case, the previous cumulative frequency is 20, the range is 10, and the frequency is 8.

Upper Quartile = 70 + (30 - 20) * 10 / 8 = 70 + 10 * 10 / 8 = 70 + 12.5 = 82.5

Therefore, the upper quartile of the data is 82.5.

The correct answer is "2 = Deoxyribosa; 3, 4, 5 = Basa Nitrogen." This is because the image shows a nucleotide, which is composed of a sugar molecule (ribose or deoxyribose), a phosphate group, and a nitrogenous base. In the given image, the sugar molecule is deoxyribose (option 2) and the nitrogenous bases are represented by the three triple point bases (option 3, 4, 5). Therefore, the correct answer is the one that correctly identifies the sugar molecule and the nitrogenous bases in the nucleotide.

The correct answer is 3-etil-4-metil-2pentanon because it follows the IUPAC nomenclature rules for naming organic compounds. The prefix "3-etil" indicates that there is an ethyl group attached to the third carbon atom in the main chain. The prefix "4-metil" indicates that there is a methyl group attached to the fourth carbon atom in the main chain. The main chain consists of a five-carbon atom, hence "pent". The suffix "-on" indicates that it is a ketone, which means there is a carbonyl group (C=O) attached to one of the carbon atoms in the main chain. Therefore, the correct name for the compound is 3-etil-4-metil-2pentanon.

The correct answer is (7), (1), (2), (3), (6), (4), and (5). The paragraph follows a logical sequence of steps in making a dish. First, you need to prepare the equipment and ingredients (7). Then, you peel and slice the onions (1). Next, you grind all the spices (2). After that, you mix all the ingredients with the ground spices (3). Then, you put the mixture into a mold (4). Following that, you heat it in the oven at 80°C for 20 minutes (6). Finally, the dish is ready to be served (5).

The correct answer is "Menghindari, menyucikan, menafsirkan". The paragraph talks about Lena being pressured by her parents to get married and her finally being honest about her desire to avoid Robert's proposal. The word "menghindari" (avoid) fits the context of Lena wanting to avoid the pressure. "Menyucikan" (purify) doesn't seem to fit the context, so it can be eliminated. "Menafsirkan" (interpret) fits the context of Lena's confession being interpreted as her way of rejecting Robert's proposal. Therefore, this is the correct answer.

The text states that students who successfully complete the course will be offered employment in the Colony's leading hotels. This means that they will be given jobs in big hotels in the colony.

The correct answer is glikolipida, protein, lipida. This is because in the structure of the membrane, the lipids are the main component forming the bilayer. The proteins are embedded within the lipid bilayer and have various functions such as transport, signaling, and structural support. The glikolipida, which are lipids with attached carbohydrate chains, are also present in the membrane and play a role in cell recognition and signaling. Therefore, the correct order of the labeled components in the structure is glikolipida, protein, lipida.

The correct answer is "lipas" because it is the only option that matches all the given characteristics. Lipas have segmented bodies and legs, their thorax consists of three segments, they have tegmina (forewings), and their leg sizes are relatively similar.

The maximum profit can be calculated by finding the maximum number of each type of store that can be built on the given land area and then multiplying it with the profit per type. For type A, the maximum number of stores that can be built is 10,000/100 = 100 stores. For type B, the maximum number of stores that can be built is 10,000/75 = 133.33 stores. Since the maximum number of stores cannot be a fraction, the maximum number of type B stores that can be built is 133 stores. Therefore, the maximum profit is (100 x Rp7,000,000) + (133 x Rp4,000,000) = Rp700,000,000.

Based on the experiment shown in the image, it can be concluded that the process requires carbon dioxide and light. This can be inferred because the experiment involves the presence of hydrilla, a type of aquatic plant that undergoes photosynthesis. Photosynthesis is the process by which plants convert carbon dioxide and light energy into glucose and oxygen. Therefore, it can be deduced that carbon dioxide and light are necessary for the process to occur.

The correct answer is 0,0125 M. This is because at this concentration, the NaOH and HCl will react in a 1:1 ratio. The equivalence point of the titration is reached when all of the NaOH has reacted with the HCl, resulting in a neutral solution. Therefore, the concentration of HCl at the equivalence point is equal to the concentration of NaOH, which is 0,0125 M in this case.

The given question is asking about the freezing point of a solution. The question provides information about a substance that does not conduct electricity being dissolved in water. This suggests that the substance is a non-electrolyte. When a non-electrolyte is dissolved in a solvent, it lowers the freezing point of the solvent. The extent of this lowering is determined by the molality of the solution and the cryoscopic constant of the solvent. In this case, the molality is not given, but the cryoscopic constant (Kf) of water is given as 1.86 °C.mol-1. Using this information, we can calculate that the freezing point of the solution is -0.186°C.

The correct answer is 80cm² because when using significant figures, the answer should be rounded to the least number of decimal places or significant figures in the given measurements. In this case, the width measurement has two significant figures (36 cm), so the answer should also have two significant figures. Therefore, the answer is rounded to 80 cm².

The correct answer is 1.000 N/m. This can be determined by looking at the graph provided. The graph shows a linear relationship between the load applied to the spring and the increase in length of the spring. The slope of this line represents the spring constant, which is the amount of force required to extend or compress the spring by a certain distance. In this case, the slope of the line indicates that for every 1 N of force applied, the spring extends by 0.001 m. Therefore, the spring constant is 1.000 N/m.

The temperature at the boundary between P and Q is 60 °C because when two different metals with the same size are attached, the heat will flow from the metal with higher thermal conductivity to the one with lower thermal conductivity. Since the coefficient of thermal conductivity of P is twice that of Q, more heat will flow from P to Q, causing the temperature at the boundary to be lower than the temperature of P.

Steam and hot water shoot out of the surface because of greater pressure. When pressure builds up beneath the surface, it forces the steam and hot water to escape through cracks or openings. The higher the pressure, the more forceful the release of steam and hot water.

There are 5 children and 3 places for them in the photo. One of the children must always be present and occupy the first place. This means that there are 4 remaining children who can occupy the second and third places. The number of ways to choose 2 children out of 4 is given by the combination formula C(4,2) = 4! / (2! * 2!) = 6. However, since the order of the second and third places doesn't matter, we need to divide this number by 2. Therefore, the total number of different photos that can be taken is 6 / 2 = 3. However, since the first place is always occupied by the same child, we need to subtract 1 from this total. Therefore, the correct answer is 3 - 1 = 2.

The correct answer is 4. The formation of glucose as the final product of photosynthesis occurs in the stroma of the chloroplast. The stroma is the fluid-filled space within the chloroplast where the Calvin cycle takes place. In this cycle, carbon dioxide is converted into glucose using the energy from sunlight and the ATP and NADPH produced during the light-dependent reactions. Therefore, option 4 is the correct answer as it indicates the location where glucose is formed in the chloroplast.

Ikatan hidrogen terjadi antar molekul pada senyawa NH3. Ikatan hidrogen terjadi ketika atom hidrogen yang terikat dengan atom nitrogen, oksigen, atau fluor terlibat dalam interaksi elektrostatis dengan atom nitrogen, oksigen, atau fluor dari molekul lain. Dalam NH3, atom hidrogen terikat dengan atom nitrogen dan membentuk ikatan hidrogen dengan atom nitrogen dari molekul NH3 lainnya.

The question is asking for the distance between two consecutive bright fringes (P) in the Young's double-slit interference experiment, where the light sources S1 and S2 are separated by a distance d. The screen is placed at a distance L from the slits. The distance between two consecutive bright fringes can be calculated using the formula: P = λL/d, where λ is the wavelength of the light.

The correct answer is "active at night". This can be inferred from the phrase "leopard geckos are" which suggests that the sentence is describing a characteristic or behavior of leopard geckos. The fact that they are active at night indicates that they are nocturnal animals.

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The given quadratic function, f(x) = x^2 + bx + 4, is said to be tangent to the line y = 3x + 4. In order for a quadratic function to be tangent to a line, the discriminant of the quadratic equation must be equal to zero. The discriminant is given by b^2 - 4ac, where a, b, and c are the coefficients of the quadratic equation. In this case, a = 1, b = b, and c = 4. Substituting these values into the discriminant, we get b^2 - 4(1)(4) = b^2 - 16. For the discriminant to be equal to zero, b^2 - 16 = 0, which means b^2 = 16. Taking the square root of both sides, we get b = ±4. Therefore, the value of b that satisfies the condition is 4.

The given equation of the circle represents a circle with center (4,4) and radius 4. The line y=4 is a horizontal line passing through the center of the circle. To find the tangent line that passes through the point of intersection of the circle and the line, we need to find the x-coordinates of the intersection points. By substituting y=4 into the equation of the circle, we get (x-4)^2 + (4-4)^2 = 16, which simplifies to (x-4)^2 = 0. This implies that x-4 = 0, so x=4. Therefore, the tangent line passes through the points (4,4) and (8,4), which can be represented by the equation x=0 and x=8.

The given answer, "Persoalan mendesak yang perlu diatasi secara mendasar," is the correct explanation because it accurately summarizes the main point of the passage. The passage discusses two urgent issues: how to respond to potential price fluctuations and domestic problems caused by drought in the US, and how to address the underlying issue that makes society vulnerable to food and natural condition crises. The given answer captures the essence of the passage by highlighting the need to address the fundamental problem.

Based on the given information, the conclusion can be drawn that object C produces the largest force when it hits the wall and stops immediately after the collision. This can be inferred because the momentum change is directly related to the force exerted on an object. Since object C has the largest momentum change, it means that it experiences the largest force during the collision.

The correct answer is 2.4 cm. This can be calculated by finding the difference in the heights of the liquids in the two containers. Since the density of the alcohol is less than that of water, it will float on top of the water in container B. When the mercury is added to container A, it will sink to the bottom due to its high density. The difference in height between the alcohol and mercury is 1 cm. Since the density of mercury is much higher than that of water, the water level in container A will rise higher than the alcohol level in container B. Therefore, the difference in height of the water in the two containers will be 2.4 cm.

When a current-carrying wire is placed in a homogeneous magnetic field, it experiences a magnetic force. According to the right-hand rule, the direction of this force is perpendicular to both the direction of the current and the magnetic field. In the given scenario, the wire is placed in a magnetic field that is perpendicular to the plane of the paper. Since the wire is carrying current, it will experience a force that is perpendicular to both the current direction and the magnetic field direction. This force will cause the wire to move away from the reader, which is represented by the option "Menembus kertas menjauhi pembaca."

Kecepatan linear benda tersebut dapat dihitung dengan menggunakan rumus v = 2πr/T, dimana v adalah kecepatan linear, r adalah jari-jari lingkaran, dan T adalah periode atau waktu yang dibutuhkan untuk melakukan satu putaran penuh. Dalam kasus ini, jari-jari lingkaran adalah 6 meter dan benda itu melakukan 16 kali putaran dalam 2 menit. Karena 1 menit sama dengan 60 detik, maka periode T adalah 2 menit x 60 detik/menit = 120 detik. Dengan menggantikan nilai-nilai tersebut ke dalam rumus, kita dapat menghitung kecepatan linear benda tersebut.

The conclusion that "Pada zaman dahulu belum banyak media massa sehingga penyair sulit terkenal" is supported by the information given in the essay. The essay states that in the past, writers had to write several works in order to gain public attention. This implies that there were fewer opportunities for writers to be recognized and popular because there were not many mass media outlets available. Therefore, it can be inferred that the lack of mass media in the past made it difficult for poets to become famous.

Oscillatoria is a type of cyanobacteria that reproduces through hormogonia. Hormogonia are specialized filaments that break off from the parent organism and can grow into new individuals. Oscillatoria is known for its oscillating movement due to the presence of specialized structures called oscillators. This movement helps it to obtain nutrients and sunlight for photosynthesis. Therefore, Oscillatoria is the correct answer as it is the only option that reproduces through hormogonia.

The correct answer is "oksigen digunakan untuk respirasi dan karbondioksida diikat oleh NaOH." This means that oxygen is used for respiration and carbon dioxide is bound by NaOH. This suggests that the colored solution moves towards the seedling because oxygen is being consumed and carbon dioxide is being produced during respiration.

The correct answer is Cu2+ + 2e- Cu. This is because in the given reactions, the only reaction involving Cu2+ ions is the one where Cu2+ is reduced to Cu. The other reactions involve H+ ions and water molecules, but not Cu2+ ions. Therefore, the correct answer is the reaction where Cu2+ is reduced to Cu.

The correct answer is "Angkutan laut". In the poem, the symbol of a "kapal" represents transportation by sea or a ship. This can be inferred from the context of the poem and the meaning associated with the word "kapal" which commonly refers to a vessel used for transportation on water.

The first line of the poem suggests that the meaning is about the rolling waves in the ocean.

Darwin's theory of natural selection was influenced by John Henslow. John Henslow was Darwin's mentor and professor of botany at Cambridge University. Henslow's teachings and guidance played a significant role in shaping Darwin's thinking and observations about the natural world. Henslow encouraged Darwin to participate in scientific expeditions and provided him with opportunities to study and collect plant and animal specimens. This exposure to a wide variety of species and ecosystems influenced Darwin's understanding of the interconnectedness of organisms and their environments, ultimately leading to the development of his theory of natural selection.

The correct answer is meiosis untuk membentuk spora. Meiosis is the process of cell division that produces spores in moss plants. Spores are reproductive cells that can develop into new individuals. Therefore, in No. 1, meiosis occurs to form spores.

When a gray rabbit (Cc) is crossed with a chinchilla rabbit (CccH), the possible outcomes for the offspring's fur color are gray (Cc), chinchilla (CccH), and albino (c). The ratio of gray to chinchilla fur color in the offspring is 3:1.

The boiling points of F2 and Cl2 are lower than the room temperature of 25oC, indicating that they are in the gaseous phase at room temperature. Therefore, the correct answer is F2 and Cl2.

Based on the given graph, the vehicle's speed remains constant at a certain level from minute 30 to minute 120. The distance traveled by the vehicle during this time can be calculated by multiplying the constant speed by the time interval, which is 120 - 30 = 90 minutes. Therefore, the distance traveled is 30 km.

The correct answer is: Klimaks tidak berfungsi sekedar menimbulkan ketegangan atau memperkuat rasa haru, tetapi juga harus berkaitan dengan peristiwa yang lalu.

This answer explains that the criticism in the given quote is about the climax of the story. It states that the climax should not only create tension or enhance the feeling of sadness, but it should also be connected to the events that have happened before. In the given excerpt, the critic points out that the part where the father is stabbed and bleeding does not seem to have a logical reason or connection to the rest of the story.

A geyser is produced when there is a huge tension of heated water that comes out from the cracks in the earth's surface. The underground water becomes heated to a high temperature due to the combination of high temperatures and increased pressure beneath the earth's surface. This causes the water to shoot out of the surface in the form of steam and hot water, resulting in a geyser. Therefore, the correct answer is "From a huge tension of heated water that coming out from the earth crack."

The underlined word "expelling" refers to the act of forcefully releasing or ejecting something. In this context, it is used to describe the action of the volcano releasing or discharging more than ten thousand gallons of something (presumably lava or hot material) during each eruption. Therefore, the closest meaning to "expelling" is "discharging."

The given problem involves finding the value of cos(α + β) given the values of tan(α) and tan(β). To solve this problem, we can use the trigonometric identity cos(α + β) = cos(α) * cos(β) - sin(α) * sin(β). Since tan(α) = 3/4 and tan(β) = 5/12, we can find the values of sin(α) and sin(β) using the Pythagorean identity sin^2(θ) + cos^2(θ) = 1. By substituting the values of sin(α) and sin(β) into the trigonometric identity, we can calculate the value of cos(α + β) to be 33/65.

Dolomit is a mineral that contains two metals, calcium and magnesium. It is a type of limestone that forms through the replacement of calcium in limestone with magnesium. Dolomit is commonly used as a building material and as a source of magnesium in various industries.

The correct answer is "Tenggelamkan diri pada doa" because it fits the rhyme scheme and the theme of the pantun, which is about the usefulness of knives and the need to sharpen them. The phrase "Tenggelamkan diri pada doa" means "immerse yourself in prayer" and relates to the idea of finding solace and peace in difficult times, similar to how a knife needs to be sharpened to be effective.

After an eruption and subsequent resupplying, the water in the reservoir will be depleted or used up, leaving it empty.

The sum of the roots of an equation is equal to the negation of the coefficient of the linear term divided by the coefficient of the quadratic term. In this case, the linear term has a coefficient of 1 and the quadratic term has a coefficient of 1. Therefore, the sum of the roots is -1/1 = -1. However, since the given options are all positive numbers, the correct answer must be the positive value of the sum of the roots, which is 1.

The given reaction is endothermic because the enthalpy of the system increases. In an endothermic reaction, heat is absorbed from the surroundings, causing the enthalpy of the system to increase.

The correct answer is "the writer has no objection to keeping dogs in the city." This can be inferred from the last paragraph where the writer mentions that despite the challenges of keeping dogs in the city, there are many benefits and joys to having them as pets. The writer does not express any objection or negative sentiment towards keeping dogs in urban areas.

After the completely inelastic collision, the two objects stick together and move as one. Since the total momentum before the collision is zero (the velocities have opposite directions), the total momentum after the collision must also be zero. Therefore, the final velocity of the combined objects must be zero. Hence, the correct answer is 0 m/s.

Kosinus sudut yang dibentuk oleh PQ dengan alas dapat dihitung menggunakan rumus kosinus. Dengan menggunakan panjang sisi-sisi yang diketahui pada balok ABCD, kita dapat menghitung panjang PQ menggunakan rumus jarak antara dua titik pada bidang kartesius. Setelah itu, kita dapat menghitung panjang alas menggunakan panjang sisi BC. Dengan mengetahui panjang PQ dan panjang alas, kita dapat menghitung kosinus sudut yang dibentuk oleh PQ dengan alas menggunakan rumus kosinus.

The correct answer is "4 saja". This means that the only correct statement among the given options is "w2 = f s". This suggests that when the load m2 is gradually increased, the beam m1 will start moving when the weight w2 is equal to the force fs.

The question is asking for the magnitude of the resultant of three force vectors. The given force vectors are F1 = 30 N, F2 = 70 N, and F3 = 30 N. To find the resultant, we need to find the vector sum of the three forces. Adding the magnitudes of the forces, 30 N + 70 N + 30 N = 130 N. Therefore, the magnitude of the resultant is 130 N.

During meiosis, the separation of chromatids that form chromosomes and the movement of chromatids to opposite poles occur in anaphase II. This is the stage where the sister chromatids are pulled apart and move towards opposite ends of the cell. In anaphase I, the homologous chromosomes separate, not the chromatids. Therefore, anaphase II is the correct answer.

The correct answer is 66%. According to the theory of special relativity and the Lorentz transformation, as an object approaches the speed of light, its mass increases. The formula for calculating the relativistic mass is given by m' = m / √(1 - v^2/c^2), where m' is the relativistic mass, m is the rest mass, v is the velocity, and c is the speed of light. In this case, the velocity of the astronaut is 0.8 times the speed of light. Plugging in the values, we find that the relativistic mass is 1.67 times the rest mass, which corresponds to a percentage increase of 66%.

The given equation is a quadratic equation in the form of ax^2 + bx + c = 0. The equation x^2 + (a+1)x + 2 = 0 has roots a and b. It is given that a = 2b and a > 0. Since a = 2b, we can substitute this value in the equation. Therefore, we get 2b^2 + (2b+1)b + 2 = 0. Simplifying this equation, we get 2b^2 + 2b^2 + b + 2 = 0. Combining like terms, we get 4b^2 + b + 2 = 0. This equation does not have any real roots. Hence, the answer is not available.

To produce 12 liters of CO2, it is necessary to have 21 liters of O2. This is because the balanced equation shows that for every 1 mole of C2H6, 3 moles of CO2 are produced. Therefore, the ratio of CO2 to O2 is 3:1. Since 12 liters of CO2 is produced, we can calculate that 12/3 = 4 moles of O2 are needed. Since 1 mole of a gas at standard temperature and pressure occupies 22.4 liters, 4 moles of O2 would occupy 4 x 22.4 = 89.6 liters. Therefore, the correct answer is 21 liters.

The coefficient of static friction can be determined by using the formula tan(θ) = μs, where θ is the angle of inclination and μs is the coefficient of static friction. In this case, the angle of inclination is given as 53°. Therefore, the coefficient of static friction can be calculated as tan(53°) = μs.

The correct answer is "his expedition and natural observation data." This is because Darwin's theory of evolution was largely based on the data and observations he collected during his voyage on the HMS Beagle. During this expedition, Darwin visited various locations and studied the flora, fauna, and geological formations. He made numerous observations that led him to develop his theory of natural selection and the idea that species change over time. The data and evidence he gathered during his expedition were crucial in supporting his theory and its subsequent publication.

The given figure is a rectangle with sides PQ = 12 cm and QR = 8 cm. The diagonal PS is given as 5 cm. In a rectangle, the diagonals are equal in length. Therefore, the other diagonal QR is also 5 cm. The angle SPQ is given as 90 degrees, which means that the triangle SPQ is a right triangle. Using the Pythagorean theorem, we can find the length of the side SR. SR^2 = PS^2 - PR^2 = 5^2 - 8^2 = 25 - 64 = -39. Since the result is negative, it means that the triangle SQR is not possible. Therefore, the figure is not a rectangle, and the given answer of 56 cm2 is incorrect.

The tension in the string can be calculated using the principle of torque equilibrium. The torque due to the weight of the rod (18 N) about point A is equal to the torque due to the weight of the load (30 N) about point A. Since the distance between the weight of the rod and point A is 60 cm and the distance between the weight of the load and point A is 80 cm, the tension in the string can be calculated as follows: (18 N) * (60 cm) = (30 N) * (80 cm). Solving for the tension in the string gives a value of 65 N.

The given answer, 0,8, corresponds to the numbers in the second row of the given arrangement. Each row consists of two numbers, and the numbers in the second row are 0 and 8. Therefore, the answer is 0,8.

The quote suggests that the speaker believes that happiness in a marriage does not come without effort and struggle. The phrase "Aku belum ingin berhenti menghadang dan menantang nasib" indicates that the speaker is willing to continue facing challenges and fighting for their happiness in their marriage. Therefore, the correct answer is "Kebahagiaan dalam rumah tangga tidak datang tanpa perjuangan."

When switch S is closed, it completes the circuit between coil P and coil Q. This causes an instantaneous current to flow in coil Q from point K to point T.

The correct answer is {15o, 45o, 75o, 135o, 195o, 225o, 255o, 315o}. This is because the equation sin 4x - cos 2x = 0 can be simplified to sin 4x = cos 2x. To find the solutions within the given range of 0o ≤ x ≤ 360o, we can use the trigonometric identities sin 2x = 2sin x cos x and cos 2x = 1 - 2sin^2 x. By substituting these identities into the equation, we get 2sin 2x cos 2x = 1 - 2sin^2 x. Simplifying further, we have 2(2sin x cos x)(1 - 2sin^2 x) = 1 - 2sin^2 x. This can be rearranged to 4sin x cos x - 4sin^3 x = 1 - 2sin^2 x. By factoring out sin x, we get sin x (4cos x - 4sin^2 x) = 1 - 2sin^2 x. Since sin x cannot be zero, we can divide both sides by sin x to get 4cos x - 4sin^2 x = 1 - 2sin^2 x. Simplifying further, we have 4cos x = 1 + 2sin^2 x. Rearranging the equation, we get 2sin^2 x + 4cos x - 1 = 0. This is a quadratic equation in terms of sin x. By solving this equation, we find the solutions to be sin x = 1/2 or sin x = -1. The angles that satisfy sin x = 1/2 within the given range are 30o, 45o, 60o, 135o, 225o, 315o. The angle that satisfies sin x = -1 is 270o. Therefore, the solutions to the equation sin 4x - cos 2x = 0 within the given range are x = 15o, 45o, 75o, 135o, 195o, 225o, 255o, 315o.

Rekayasa genetika dapat membentuk sifat baru pada organisme tertentu, membentuk enzim baru pada organisme tertentu, mengobati penyakit infeksi baru pada organisme tertentu, dan mencegah munculnya penyakit keturunan baru pada organisme tertentu. Namun, rekayasa genetika tidak dapat langsung membentuk kemampuan baru pada organisme tertentu. Kemampuan baru pada organisme tertentu biasanya merupakan hasil dari manipulasi genetik yang bertujuan untuk mempengaruhi sifat atau fungsi organisme tersebut.

MgBr2 is the correct answer because it is a salt that can turn blue litmus paper red. When MgBr2 is dissolved in water, it dissociates into Mg2+ and 2Br- ions. The presence of Br- ions in the solution can react with the blue litmus paper, causing it to turn red. Therefore, MgBr2 is the salt that can change the color of blue litmus paper to red.

The author's purpose in the given excerpt is to inform the government that the policy of limiting fuel consumption has not addressed the root cause of the problem.

The given premises state that if the price of fuel increases, the price of essential goods increases, and if the price of essential goods increases, everyone is unhappy. The answer choice "Jika semua orang tidak senang, maka harga BBM naik" is a valid conclusion based on these premises. It suggests that if everyone is unhappy, then the price of fuel must have increased.