Simplify square root of 3 times square root of 21 . (1 point) Group of answer choices square root of 24 square root of 63 3 square root of 7 None of the above

  3√7

Step-by-step explanation:

(√3)(√21) = √(3·21) = √(3·3·7) = √(3²·7) = 3√7

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The product of the roots is the root of the product. The product, 3·21 = 63, has a square factor that can be removed from under the radical. You need to factor out the root of that square when you simplify the expression.

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

the correct answer is d

hope this