Answer:
Its 9
Step-by-step explanation:
Answer with Step-by-step explanation:
Since we have given that
Angle 12 and angle 11 are complementary.
Mathematically, it is expressed as
------------(1)
measure of angle 10 + measure of angle 11 = 90 degrees.
Mathematically, it is expressed as
----------------(2)
From eq(1), and eq(2), we get that

Hence, angle 12 is congruent to angle 10.
Answer:
a = 3, b = -1
Step-by-step explanation:
a = 5b + 8
a = -10b - 7
5b + 8 = -10b - 7
Add 10b from both sides;
15b + 8 = -7
Subtract 8 from both sides;
15b = -15
Divide both sides by 15;
b = -1
Lets substitute b;
a = 5b + 8
a = 5(-1) + 8
a = -5 + 8
a = 3
120+120=240
The roof of the house is 240 ft^2
Step-by-step explanation:
Given that,
BC = 8
Ac = 15
We can find AB using the pythagoas theorem.

We know that,
, B is base and H is Hypotenuse

Hence, this is the required solution.