Select all the ratios that are equivalent to 4: 5.
14:27.5 2:2.5 3:3.75 2:3 8:10 7:8

 All the ratios that are equivalent to 4: 5 are

2:2.5   3:3.75  and   8:10

Step-by-step explanation:  You can check by making fractions of the ratios.

4/5 = 0.8

2/2.5 = 0.8  Also, the values are each half of the given ratio.

8/10 = 0.8   and the values are double the numbers in the given ratio.

3:3.75   this one is not obvious at first, but each value is .75 or 3/4 of the numbers in the given ratio, and it passes the decimal equivalency test:

3/3.75 = 0.8

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)

hey seth! : )

i’m not 100% sure, but i think it’s b

hope this ya : p

miss u!

- nicole