7) If a number is added to its square, the sum, is 90. What is the number?, A.8, B.9, C.10, D.11

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7) If a number is added to its square, the sum


is 90. What is the number?
A.8
B.9
C.10
D.11​

Answer:

B. 9

Step-by-step explanation:

90-9 =81

Square root of 81 is 9


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