Arow of plaques covers 120 square feet of space along a wall. if the plaques are 3 feet tall, what length of the wall do they cover?

40 feet of the wall will be covered.

Step-by-step explanation:

A row of plaques cover an area of 120 square feet of space on the wall.

Height of the plaques is 3 feet then we have to tell the length of the wall that will be covered.

Area of the wall covered by plaques = Length of Plaques × width of the plaques

120 = length × 3

length = 120 ÷ 3 = 40 feet.

Therefore plaques will cover 40 feet of the wall.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.