Solve the problem.The sum of the squares of the digits of a positive two-digit number is 61, and the tens digit is 1 more than the units digit. Find the number.
A. 65
B. 54
C. 45
D. 56
Answer: A
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Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 3x + 5y = -10-3x - 6y = 9
A. {(-1, 5)} B. {(-5, 1)} C. {(1, -5)} D. {(5, -1)}
Find the volume of the solid generated by revolving the shaded region about the given axis.About the x-axis
A. 18?
B. 
?
C. 
?
D. 
?
An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 8;
T = 5 seconds
A. d = -8 cos 
B. d = -8 cos 
C. d = -5 cos 
D. d = -8 sin 
Solve.Two tracking stations are on the equator 174 miles apart. A weather balloon is located on a bearing of 
from the western station and on a bearing of N23°E from the eastern station. How far is the balloon from the western station? Round to the nearest mile.
A. 530 mi B. 521 mi C. 548 mi D. 557 mi