Which of the following is a perfect square?

a. 127
b. 100
c. 13
d. 102

B. 100

Step-by-step explanation:

10^2 = 10 * 10 = 100

B. 100

Step-by-step explanation:

Perfect squares are numbers in which, when the square root is taken, result in a whole number. 100 is the only number on this list in which this definition accurately describes (as the square root of 100 is 10), so it is your answer.

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

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step-by-step explanation: