Prove the following theorem indirectly. we will give you a start.

prove that a triangle cannot have two right angles.
a triangle cannot have two right angles. suppose a triangle had two right angles.

Step-by-step explanation:

Suppose a triangle had two right angles.

The sum of all angles of any triangle is 180°.

The measure of a right angle is 90°.

By difference, the measure of the other angle can be determined.

Since the two angles have a measure of 90° each, then by difference, the measure of the third angle is 180° - (90° + 90°) = 0°.

If the angle is 0°, there would only be two sides.

A triangle has three sides.

Therefore, a triangle can't have two right angles.

it 2

step-by-step explanation:

8^1/3=2

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!