Can soemone explain how to do this

9.    -5.83.

10.    5 3/10

Step-by-step explanation:

9.   -4.35 - 1.48

Suppose these are  degrees celsius below zero. The - 1.48 takes the temperature down further and the number part gets  higher. We are 'adding' a negative to get another negative.

So it is   -4.35 - 1.48 = -5.83.

10. 1  4/5 - (-3 1/2)

= 1  4/5  - 1 * -3 1/2       Note:  a - times a - = + so we have

1  4/5 + 3  1/2

= 1 + 3+ 4/5 + 1/2

= 4 + 8 /10 + 5/10

= 4 +  13/10

= 4 + 1 + 3/10

= 5 3/10

i dont know

step-by-step explanation:

the correct answer is d

hope this