Answer:1st one 2nd one and 8th
Step-by-step explanation:
4:14 , 6:21, 8:28, 10:35!!!
You need to distribute the numerical factors for each term in the parenthesis:

This equals

Answer:
x = 8
Step-by-step explanation:
The sum of the measures of two complementary angles is 90°.
m<C + m<D = 90°
5x + 7x - 6 = 90
12x = 96
x = 8
Answer:
d) 1
Step-by-step explanation:
3a = –2b – 7
We have the point (a, -5) so b = -5
Substituting in
3a = -2(-5) -7
3a = 10-7
3a = 3
Divide each side by 3
3a/3 = 3/3
a =1