Are the following numbers perfect squares? give the square roots of the numbers that are perfect squares.
a. 100 b. 127 c. 81 d. 144

The answers are:

a. 100 , it's a perfect square. Square root = 10

b. 127, it's not a perfect square.

c. 81, it's a perfect square. Square root = 9

d. 144, it's a perfect square. Square root = 12

The square of a number, is the number that give the original result multiplied by itself. The perfect squares are only the square of whole numbers, so, if it's possible,  let's find the square roots of each given number:

a. 100

It's a perfect square since the square root is a whole number.

b. 127

It's not a perfect square since the square root is not a whole number.

c. 81

It's a perfect square since the square root is a whole number.

d. 144

It's a perfect square since the square root is a whole number.

Have a nice day!

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation: