Pencils come in packets of 10 and erasers come in packets of 12 . how may packets am i gonna need to get the same number of pencils and erasers

Factors:

10 = 5*2

12 = 2*2*3

Least common multiple: 2*2*3*5

                     =60

you will need 6*10 = 60 or 6 packets of pencils

and 5*12 = 60  and 5 packets of erasers

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.