During the last lap of a dirt race, the speed of a car is given by the function v(t) = – t2 + 16t, where v is expressed in meters/second and t is in seconds. What is the maximum speed that the car achieved during the last lap? A. 32 meters/second B. 64 meters/second C. 40 meters/second D. 80 meters/second

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step-by-step explanation:

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step-by-step explanation:

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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°.