Expressions And Equations Quiz

If e = 2, then dividing 8 by e would be equivalent to dividing 8 by 2, which equals 4.

The rule for the input-output machine is to add 5 to the input number in order to get the output number. This can be observed by the pattern where each input number is increased by 5 to obtain the corresponding output number.

The algebraic expression for "a number f decreased by 18" is f - 18. This is because when we say "decreased by," it implies subtraction. So, we subtract 18 from the number f to represent the decrease.

The correct answer is "the product of 25 and k". This means that 25k is the result of multiplying 25 and k together.

The given rule states that the output is obtained by subtracting the input value from 25. Therefore, if we input 19 into the function, we subtract 19 from 25, resulting in an output of 6.

The question asks for the sum of 5 and m, where m is given as 17. To find the sum, we add 5 and 17, which equals 22. Therefore, the correct answer is 22.

To evaluate the equation x + 9.2 = 27.4, we can start by subtracting 9.2 from both sides of the equation. This will give us x = 18.2. Therefore, the value of x that satisfies the equation is 18.2.

An equation is a mathematical statement that shows that two expressions are equal, and it is represented by an equal sign. On the other hand, an expression is a mathematical phrase that may contain variables, numbers, and operations, but it does not have an equal sign. Therefore, the correct answer is that an equation has an equal sign, but an expression does not.

The equation is solved by dividing both sides by 100 to isolate the variable p. This results in p = 500/100, which simplifies to p = 5.

The given question asks for the result of subtracting the value of w (7.8) from 29.2. By performing the subtraction, we get 29.2 - 7.8 = 21.4. Therefore, the correct answer is 21.4.