Need . steps and explanation also if possible. #54

18 and 24 are semiperfect numbers.

Step-by-step explanation:

18 = 9 + 6 + 3

24 = 12 + 8 + 4

9, 6, and 3 are factors of 18 since 6 * 3 = 18 and 2 * 9 = 18

12, 8, and 4 are factors of 24 since 12 * 2 = 24, 8 * 3 = 24, and 6 * 4 = 24

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3