Devon’s teacher requires that students show each step in solving a problem. devon wrote the following when solving the equation x- 7 = 20: x -7 = 20 x -7 = 20 + 7 x = 27 the teacher said that devon’s work was not shown correctly. why? a) devon’s final answer should be 13 b) devon should have shown that he added 7 to both sides c) devon should have shown that he subtracted 7 from both sides d) devon should have shown that he added 7 to the left side only

B) Devon should have shown that he added 7 to both sides

Step-by-step explanation:

x-7 =20

add 7 to each side

x-7+7 = 20+7   NOT x-7 = 20+7

x=27

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