Which of the following expressions are equivalent to (6.2+6.2)+9.4

a and e

Step-by-step explanation:

(6.2 + 6.2) + 9.4 = 21.8

6.2 + (6.2 + 9.4) = 21.8

-(-6.2 + 6.2) + 9.4 = 9.4

-(6.2 + 6.2) + 9.4 = -3

6.2 - (-6.2 - 9.4) = 21.8

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

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12