Mark incorrectly solved the equation -2(x – 3) – 5 = 9. His steps are shown below: ( its the attached image )
Please Help Me Solve These Two Questions
1. Mark made two mistakes. Identify which line Mark made his first mistake in and explain to Mark what he did wrong.
2. Mark made two mistakes. Identify which line Mark made his second mistake in and explain to Mark what he did wrong.

answer: it is 8

step-by-step explanation:

you know why its 8

the answer is

d.

5.3066 m2

step-by-step explanation:

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°.