Which are equivalent expressions? Check all that are true.

2a · 2b = 2ab

6a = 6 · a

5a = 5 + a

3ab = 3c

2a · b = 2ab

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

roots are from trees

step-by-step explanation:

2 pecks

step-by-step explanation:

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!