Why is x = 4 a solution to the proportion 15/x = 56/16 a) because 56 divided by 14 equal to 4. b) because 56 divided by 16 is equal to 4. c) because if you substitute 4 into the equation for x and cross multiply, you get 196 = 196. d) because if you substitute 4 into the equation for x and cross multiply, you get 224 = 224

The given proportion is

Substitute , x=4 in the equation

Option D

Because if you substitute 4 into the equation for x and cross multiply, you get 224 = 224.

answer: the equation matches the regression

step-by-step explanation:

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