Ayo i need help plz it would be rlly helpful

Step-by-step explanation:

Combine like terms

6) -4f - 9 -f + 15 = -4f - f  -9  +15

                          = -5f  + 6

7) 1.5g - 10 + 6.5g - 3 = 1.5g + 6.5g   - 10 - 3

                                  = 8.0g -13

                                   = 8g - 13

8)

9) 4.2j + 6.7j - 5j - 5 = 10.9j - 5j - 5

                                = 5.9j - 5

x intercept = (-1,0)   (4,0)

-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