Solve the problem.The altitude of a projectile in feet (neglecting air resistance) is given by 
where x is the horizontal distance covered in feet and v is the initial velocity of the projectile at an angle ? from the horizontal. Find the firing angle (in degrees) of a projectile fired at an initial velocity of 100 feet per second so that it strikes the ground 312.5 feet from the firing point.
A. 30°
B. 45°
C. 22.5°
D. 50°
Answer: B
Mathematics
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Solve the problem.Classify the angle as right, acute, obtuse, or straight.
A. Obtuse B. Acute C. Straight D. Right
Mathematics
Solve the problem.A building has an entry with the shape of a parabolic arch 100 ft high and 28 ft wide at the base. Find an equation for the parabola if the vertex is put at the origin of the coordinate system.A = 100 ftB = 28 ft
A. x2 = -2y B. y2 = -2x C. y2 = -7.8x D. x2 = -7.8y
Mathematics
Provide an appropriate response.Depreciation and rent are frequently considered to be overhead.
A. True B. False
Mathematics
Given vectors
and 
determine the quantity indicated below. -3u - 2v.
A) –6 B) –21 C) 36 D) –18 E) 78
Mathematics