Find the measure of the angel. n=_°

n = 25°

Step-by-step explanation:

All interior angles of a triangle add up to 180°. We already know one of the angles is 90°, so we can build an equation:

90 + (n + 40) + n = 180.

Then we combine like-terms and subtract:

130 + 2n = 180,

2n = 50.

Then we divide by 2 to get our

n = 25.

To double check, we insert 25 as our value:

90 + (40 + 25) + 25 = 180.

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: