Solve the problem.A searchlight is shaped like a paraboloid of revolution. If the light source is located 3 feet from the base along the axis of symmetry and the opening is 14 feet across, how deep should the searchlight be?
A. 0.3 feet
B. 16.3 feet
C. 4.1 feet
D. 12.3 feet
Answer: C
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The life expectancy E, in solar lifetimes, of a star is related to the mass M, in solar masses, by the formula
.
?
A: Make a graph of the life expectancy versus the mass. Include up to 20 solar masses.B: Does a larger star have a longer or shorter life expectancy?C: If one star is double the mass of another, how do their life expectancies compare? Express your answer as a percent.
?
Round your answer to two decimal places if necessary.
?
What will be an ideal response?
Evaluate the expression using the order of operations.(8 + 4)2
A. 68 B. 144 C. 80 D. 24
The given point lies on the graph of the unit circle and corresponds to a real number t. Find the value of the indicated trigonometric function of t.
Find cos t.
A. 
B. - 
C. - 
D. 
Find the radius of the given circle.
A. 116.18 ft B. 18.5 ft C. 37 ft D. 4298.66 ft