Answer:
- If angle C is 90 degrees (def. of right angle) then the sum of angle A and B has to 90 degrees since angle A + B + C (90°) = 180°
Statements and Reasons:
3. Angle C is 90 degrees because of the definition of right angle.
4. Angle A + angle B + angle C is 180 degrees because of triangle sum.
5. Angle A + angle B + 90 = 180 because of substitution postulate.
6. Angle A + angle B is 90 degrees because of subtraction postulate. (subtract 90 from both sides from the equation above this step).
7. Angle A and angle B are complementary.
I'm assuming the question is asking for you to factor the expressions.
b.
(x-3)(x+2)
-3+2=-1
-3*2=-6
d.
(x-6)(x-7)
-6-7=-13
-6*-7=42
3) median and mode!
Explanation:
Median- 3,4,5,(5),7,9,19
Mode- 5 is repeated.
1,157 a month has approximate of 4 weeks so
289.25 x 4 = 1,157
Its 1+20x because you would subtract 2-1-=1 and 35x-15x=20x im sorry this is the real correct answer
