Question

use mental math to solve the equation
y/3 = 6


A. 2
B. 9
C. 18 my answer
D. 24

estimate the solution of the equation x - 8.1 = 5.3 to the nearest whole number

A. about 13
B. about 14
C. about 4
D. about 3

Answer 1

=5

Answer 2

Your first answer is correct :)

Estimating with the second equation we must first round out each value. `8.1 would go back to 8` and `5.3 would go back to 5`. We do the opposite process done in the equation so instead of `subtracting 8` we would `add 8` to each side.

\(\huge\bf{x=8+5}\)

Answer 3

15

Answer 4

Not quite.

Answer 5

15 is not one of the answers.

Answer 6

so 14

Answer 7

@563blackghost

Answer 8

If we do `8.1 + 5.3 = 13.4` Though rounding that we get 13.