Please HELP:( please please please:((

Step-by-step explanation:

All use distributive propriety of multiplication over addition/subtraction

just remember  (-)*(-) = (+) and (-)*(+) = (-)

1) -6(a+8) = -6a -48

2) 4(1+9x) = 4 + 36x

3) 6(-5n+7) = -30n + 42

4) (9m +10) *2 = 18m +20

5) (-4-3n)*-8 = 32+24n

6) 8(-b-4) = -8b -32

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

i do not know the answer

step-by-step explanation: