Solve the problem. Assume the x-axis is horizontal, the positive y-axis is vertical (opposite g), the ground is horizontal, and only the gravitational force acts on the objects. A projectile is fired with an initial speed of 569 m/sec at an angle of 45°. What is the greatest height reached by the projectile? Round your answer to the nearest tenth.
A. 8,259.2 m
B. 82.1 m
C. 33,036.8 m
D. 80,940.3 m
Answer: A
Mathematics
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Find the function value.Find cos 
, given that cos ? = - 
and 180° < ? < 270°.
A. - 
B. - 
C. 
D. 
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Use the vertical line test to determine whether the graph represents a function.
A. function B. not a function
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Multiply.(w - 3)(9w2 + w + 9)
A. 9w3 - 26w2 + 6w - 27 B. 9w3 + 26w2 + 6w - 27 C. 9w3 - 26w2 + 12w - 27 D. 9w3 - 28w2 + 6w - 27
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Solve.The second angle of a triangle is 4 times as large as the first. The third angle is 40° more than the sum of the other two angles. Find the measure of the second angle.
A. Second: 70°
B. Second: 14°
C. Second: 3
°
D. Second: 56°
Mathematics