Mrs. brown has 15 children in her first-grade class, and mr. lopez has 20 children in his second-grade class. the principal has been asked to select 1 student from one of the classes to appear at a pta meeting. how many ways can the selection be made?

i just took the test, the correct answer is .. 31.5 in.

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d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d