Question

QUESTION 3

Mark multiplied a number by itself, and found a product of 30. What is the number he started
with, rounded to the nearest tenth?

Answer 1

n for number

n x n = 30

n =

we have multiple options for n

exact forms:

√30

-√30

exact decimal forms:

5.47722557...

-5.47722557...

rounded to the nearest tenth:

i THINK:

5.5

-5.5

5.4

-5.4

sorry if im wrong with the rounding, hope this helps though :)

Answer 2

5.5

Explanation:

√30, which will round to 5.5, because √30*√30=30.