Which expression is equivalent to 3(8 + 7)? (1 point) a 24 + 7 b 24 + 21 c 11 + 10 d 11 + 7

b)24+21

Step-by-step explanation: You have 3(8+7).So u do distributive property.

First do 3 times 8 =24 then d0 3 times 7 =21.Lastly add them together which is 24+21.

Hope it helps :)

fdvs

step-by-step explanation: vsfdvsfvd

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.