Answer:
If the lines that forms < X are perpendicular, it can be assumed that it is a right angle.
Step-by-step explanation:
An indirect proof of an angle is an assumption about the value of the angle that can be made by mere inspection and some considerations.
< X = right angle = 
A right angle is one that is equal to
. As an indirect proof, if the lines that forms the angle are perpendicular; then it can be assumed to be a right angle. Because perpendicular lines are at right angle to one another.
Answer:
A(1) = -7
A(4) = -48
A(8) = -769
Step-by-step explanation:

Answer:
4.08 km
Step-by-step explanation:
we must know what is the speed of sound to determine the distance at which the ray originated
The speed at which the sound of lightning travels is approximately 0.340km/s
then
d = 0.340km/s*12 s= 4.08 km
Answer:
It is c-88=405 trust me :D
Step-by-step explanation:
*whispers* It doesn't hurt to give brainliest, I only need one more for my next tier, can I have it?
Answer:
=53x+7
Step-by-step explanation:
Distribute:
=8x+−3+(5)(9x)+(5)(2)
=8x+−3+45x+10
Combine Like Terms:
=8x+−3+45x+10
=(8x+45x)+(−3+10)
=53x+7