Solve the formula for the indicated variable with the given information.d = rt for d, with r = 60 miles per hour and t = 4 hours
A. d = 15 miles
B. d = 64 miles
C. d = 0.7 miles
D. d = 240 miles
Answer: D
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Solve.Points A and B are on opposite sides of a lake. A point C is 
from A. The measure of angle BAC is 
and the measure of angle ACB is determined to be 38°30'. Find the distance between points A and B to the nearest meter.
A. 55 m B. 53 m C. 26 m D. 28 m
Find all solutions of the equation.2 cos x - 1 = 0
A. x = 
+ n? or x = 
+ n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ 2n? or x = 
+ 2n?
Solve.The orbit of a planet, in a galaxy far, far away, is an ellipse. If the center of the ellipse is at the origin, an approximate equation for the orbit is 
+ 
= 1, where x and y are measured in millions of miles. Find the largest possible distance across the ellipse. Round the answer to the nearest million miles.
A. 164 million miles B. 13,368 million miles C. 116 million miles D. 82 million miles
Simplify the expression.
- 
A. 2y
B. 
C. 
D. 0