Ella stacks two boards under a table to make it level. one board is 78 inch thick. the other board is 512 inch thick. which equation most closely estimates the thickness of the two boards?

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

you're missing vital information, add to it so we can solve this problem for you.

step-by-step explanation:

b i think

step-by-step explanation:

not really sure

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°.