In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.b = 12 cm, c = 15 cm
A. a = 81 cm
B. a = 9 cm
C. a = 10 cm
D. a = 3 cm
Answer: B
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Solve the problem.A merchant has coffee worth $30 a pound that she wishes to mix with 40 pounds of coffee worth $90 a pound to get a mixture that can be sold for $40 a pound. How many pounds of the $30 coffee should be used?
A. 120 lb B. 240 lb C. 100 lb D. 200 lb
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = i - 4j,
w = 3i + j
A.
v1 = -  i -  j, v2 =  i -  j |
B. v1 = -
i - 
j, v2 = - 
i - 
jC. v1 = -
i - 
j, v2 = 
i - 
jD. v1 = -
i - 
j, v2 = 
i - 
jWrite the equation of the line whose graph is shown.
A. y = - 
x + 5
B. y = -6x + 5
C. y = 6x + 5
D. y = - 
x + 6
Solve the problem.After a person stops pedaling a bicycle, the wheel rotates 500 times the first minute. Each subsequent minute, it rotates 
as many times as in the previous minute. How many times will the wheel rotate before coming to a complete stop?
A. 3500 rotations B. 2000 rotations C. 666.7 rotations D. 4000 rotations