Question

PLEASEEE HELPPP ASAPP! THANK YOU LOTS!! <3 (7TH GRADE MATH)

btw January: -5/8 and July: 6 5/8

Answer 1

Therefore the change in water level over the course of 9 months is a drop in level of 3.4 cm (= -3.4 cm)

Explanation:

i) change in water level over the course of 9 months =

`- (5)/(8) - 0.4 - 0.4 - 6 - 2.9 + 3.2 + 6(5)/(8) - 3.2 + 0.3`

=
`-0.625 - 0.4 - 0.4 - 6 - 2.9 + 3.2 + 6.625 - 3.2 + 0.3`

= -3.4

Therefore the change in water level over the course of 9 months is a drop in level of 3.4 cm (= - 3.4 cm)