Translate into an equation. Do not solve the equation.What number times three equals twenty-four?
A. x = 3 ? 24
B. 3 + x = 24
C. 3 = 24x
D. 3x = 24
Answer: D
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When a car skids to a stop, the length L, in feet, of the skid marks is related to the speed S, in miles per hour, of the car by the equation 
.
As speed increases, so does the length of the skid marks. What can you say about the rate of increase? A graph of L versus S can help you answer this question.
?
A. Skid mark length increases more rapidly as speed increases. B. Skid mark length increases rapidly at first but slows as speed increases. C. Skid mark length increases at a decreasing rate. D. None of the above.
Solved
1 If f = ÄÄÄÄÄ, solve for L when f = 1 megHz and C = 0.001 æF. ÚÄÄ 2ãûLC a. L = 40.9 mH b. L = 6.4 æH c. L = 25.3 æH d. L = 5.1 mH e. L = 0.001 mH
A reflector for a satellite dish is parabolic in cross section, with the receiver at the focus F. The reflector is 1 ft deep and 30 ft wide from rim to rim (see the figure). How far is the receiver from the vertex of the parabolic reflector? 
?
Round to the nearest foot, if necessary.
?
?
A. 59 ft
B. 51 ft
C. 56 ft
D. 53 ft
E. 52 ft
Solve the problem.In 1838, the German mathematician and astronomer Friedrich Wilhelm Bessel was the first person to calculate the distance to a star other than the Sun. He accomplished this by first determining the parallax of the star, 61 Cygni, at 0.314 arc seconds (Parallax is the change in position of the star measured against background stars as Earth orbits the Sun. See illustration.) If the distance from Earth to the Sun is about 150,000,000 km and ? = 0.314 seconds = 
minutes = 
degreesdetermine the distance d from Earth to 61 Cygni using Bessel's
figures. 
What will be an ideal response?