Wallpaper was applied to one rectangle of a small room. 8.5 ft by 9 ft. If the total cost of wallpaper was $45.90, what was the cost, in dollars, of the wall paper in square feet?

the cost of the wallpaper per square feet is $0.6

Step-by-step explanation:

The formula for determining the area of one rectangle of the rectangular room is expressed as

Area = Length × width

Wallpaper was applied to one rectangle of a small room. 8.5 ft by 9 ft. It means that the area on which the wallpaper is applied is

9 × 8.5 = 76.5 square feet

If the total cost of wallpaper was $45.90, it means that the cost of the wallpaper per square feet is

45.9/76.5 = $0.6

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3