What number do you add to get from
-6250 to -10

(positive) 6,240

Explanation:

You're asking how to get to -10 from -6,250, so first you must remember for example, -1+1=1, because you're adding a regular positive number to it. It would be the same with your question. -6,250+6,240=-10.

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk