Carlos wants to purchase a new tennis racket and decides to purchase some tennis balls as well. His racket cost 55 dollars and each ball costs 2 dollars. If he has 80 dollars, how many tennis balls can he buy? A) Write the equation that represents this situation.
B) How many tennis balls can he buy?

80-55=25

then

25/2=12.5

he can bye 12.5 balls

Step-by-step explanation:

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)

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3