Which is a perfect square?
72
81
90
99

answer:

the correct answer is 81

step-by-step explanation:

given numbers   72 81 90 99 .

we have to choose the number out of given options that are perfect squares.

perfect squares   are those numbers that be written as product of two equal numbers. also perfect squares are those numbers that can be written as square of a number.

thus, for given numbers

1) 72 = 8 × 9

2) 81= 9 × 9

3) 90=   9 × 10

4) 99 =   9 × 11

thus, out of given option only 81 is written as product of two equal numbers.thus 81 is perfect square.

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y -5 = (-1/4)(x + 8)

step-by-step explanation:

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.