jayellehaerewa jayellehaerewa

25-11-2019
Mathematics

contestada

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

a. 4
b. 7
c. 3
d. 6

PLEASE ANSWER QUICKLY (:

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jimrgrant1 jimrgrant1

25-11-2019

Answer:

c

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 = [tex]\sqrt{9}[/tex] = 3

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