A car that travels 20 miles in $$ hour at constant speed is traveling at the same speed as a car that travels 30 miles in $$ hour at a constant speed. Explain or show why. You may use the interactive double number line or table to help communicate your thinking.

2/3 of 30 miles in 3/4 hours is the same as 20 miles in 1/2 hour.

Step-by-step explanation:

30/1x2/3

60/3 = 20

3/4x2/3

6/12 = 1/2

brainliest pls

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb