Arectangle has perimeter 78 cm and length 32 cm. what is its width?

width = 7 cm

Step-by-step explanation:

So, to find the perimeter you multiply the width by 2, multiply the length by 2, then add them together.

P = 2L + 2W

But, we already know the perimeter and length, so we need to find the width.

78 = 2(32) + 2W

78 = 64 + 2W

-64   -64

14 = 2W

/2     /2

7 = W

So, to check your answer, plug in the width (that you just found), and the length to see if you get 78, the perimeter.

P = 2L + 2W

P = 2(32) + 2(7)

P = 64 + 14

P = 78

So, yes, the width =7

i think it would be 43 movies that would have to be watched.

step-by-step explanation:

think about it. for the second plan, every month is 8 dollars. 8 x 12= 96. so thats the number for the second plan. now for the first plan, its annual meaning you have to pay 10 dollars every year. so now you have to get an equivalent amount of 86 since 96-10=86. 86 divided by 2 since every movie costs 2$ then you would have to watch 43 movies a year to get the same as the second plan. i really hoped this . have a wonderful day as well!