4 years ago

A positive number is multiplied by itself and then 7 is added. The answer is 16. What is the number?

Mathematics

1 answer:

Alika [10]4 years ago

5 0

Answer:

Step-by-step explanation:

let the number be n then multiplied by itself gives n², thus

n² + 7 = 16 ( subtract 7 from both sides )

n² = 9 ( take the square root of both sides )

n = $\sqrt{9}$ = 3

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