Use the expression 4^{3}+8-\dfrac9y4 3 +8− y 9 4, cubed, plus, 8, minus, start fraction, 9, divided by, y, end fraction to find an example of each kind of expression.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6

2 apples

step-by-step explanation:

taking away equals subtraction. 6-4=2