Which of the following chemical equations depicts a balanced chemical equation? A. 2AgNO3+K2CrO4−>2KNO3+Ag2CrO4 B. 3AgNO3+2K2CrO4−>3KNO3+2Ag2CrO4 C. AgNO3+K2CrO4−>2KNO3+Ag2CrO4 D. AgNO3+K2CrO4−>KNO3+Ag2CrO4

ratio is 2 : 9

the answer is three

13.5 : 3

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°.