Question

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

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

Answer 1

Answer:

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

Step-by-step explanation:

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

   $- \frac{5}{8} - 0.4 - 0.4 - 6 - 2.9 + 3.2 + 6\frac{5}{8} - 3.2 + 0.3$

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

= -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)