Solve the problem.If a satellite is placed in a circular orbit of 220 kilometers above the Earth, what is the equation of the path of the satellite if the origin is placed at the center of the Earth (the diameter of the Earth is approximately 12,740 kilometers)?
A. x2 + y2 = 167,961,600
B. x2 + y2 = 48,400
C. x2 + y2 = 43,428,100
D. x2 + y2 = 40,576,900
Answer: C
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The polar coordinates of a point are given. Find the rectangular coordinates of the point.(400, 130°) Round the rectangular coordinates to two decimal places.
A. (-257.12, 306.42) B. (-257.12, -306.42) C. (306.42, 257.12) D. (306.42, -257.12)
Solve the equation.7(3x - 12) = 6(3x - 12)
A. 3 B. 5 C. 6 D. 4
Solve the problem.For a school walk-a-ton, Rebecca got pledges totaling $11 per mile walked. If she walks 10,560 feet, how much money will she have collected for the walk-a-thon?
A. $2.00 B. $22.00 C. $116,160.00 D. $66.00
Suppose that, for a certain exam, a teacher grades on a curve. It is known that the mean is 50 and the standard deviation is 6. There are 60 students in the class. How many students should receive a C?
?
?
A. 43 B. 35 C. 37 D. 21 E. 41