PLEASE HELP
(do not answer if you do not know, so the points go to people who do know.)

going from left to right, up to down. 8 cu. in, 48 cu. in, 15 cu. in, 36 cu. in, 126 cu. in, 90 cu. in, 112 cu. in, 60 cu. in, 189 cu. in

Step-by-step explanation:

just multiply all three numbers

25/4

step-by-step explanation:

call segment cd's length x. because dc and ab are parallel, angle acd and cab, so triangles adc and abc are similar and we can set up the equation x / ac = ac / ab, or x / 5 = 5 / 4 and x = 25/4.

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to