Find the sum of each.
Please help thanks.
Answer and explanation.
Brainliest.

1) 3.8 - 2.9= .9

2) -38 - 57= -95

3) -1 1/3 - 3/4= -1

Step-by-step explanation:

Keep change flip

keep the first number the same

Change the problem to subtraction

flip the last number to a positive

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .