High School Placement Test Prep

The product of the square root of 25 and the square root of 81 can be calculated by multiplying the two square roots together. The square root of 25 is 5, and the square root of 81 is 9. Multiplying 5 and 9 gives us 45, which is the correct answer.

The given answer states that '5' is a prime number because it is only divisible by itself and 1. This is the definition of a prime number - a number that has no other divisors except for 1 and itself. Therefore, '5' fits this criteria and is considered a prime number.

The angle that is complementary to another angle is the angle that, when added to the given angle, will result in a sum of 90 degrees. In this case, the angle that is complementary to 55 degrees would be 35 degrees. Adding 55 degrees and 35 degrees gives a sum of 90 degrees, which is the definition of complementary angles.

The phrase "He kicked the bucket" is an idiom that means someone has died. It is not meant to be taken literally, but rather as a euphemism for the end of someone's life.

The synonym of the verb "stop" is "halt".

The reciprocal of a number is obtained by dividing 1 by the number. In this case, the reciprocal of 20 is 1/20, which is equal to 0.05.

Adjectives are words that describe or modify nouns or pronouns. They provide additional information about the noun or pronoun by answering questions such as what kind, which one, how many, or how much. Adjectival phrases are groups of words that function as adjectives, providing more detailed descriptions. In this context, the correct answer is "Adjectives" because it accurately describes the category of words that provide additional information about nouns or pronouns.

There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. Therefore, to calculate the total number of seconds in a day, we multiply 60 by 60 and then by 24, which equals 86,400 seconds.

A noun phrase would make a good subject in a sentence because it consists of a noun and any words that modify or describe it. In a sentence, the subject is typically the noun phrase that performs the action or is being described. Therefore, a noun phrase is a suitable choice for a subject in a sentence.

When a word can properly replace the highlighted word in a sentence, it is considered a synonym. This means that the word has a similar meaning and can be used interchangeably without changing the overall meaning of the sentence.