Can someone me on this and explain it to me because i really don’t get it.

i think 5 miles per hour

step-by-step explanation:

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm