Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 5x + 4y = 84x - 2y = 22
A. (3, -4)
B. (4, -3)
C. (-4, 3)
D. (-3, 4)
Answer: B
Mathematics
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Perform the indicated operation. Write the result in scientific notation.
A. 3.0 × 10-13 B. 3.0 × 10-1 C. 6 × 10-1 D. 6 × 10-13
Mathematics
Solve the problem.The equation 
arises in the design of rods and pistons. Solve for ?.
A. ? = 
cos-1 
B. ? = cos-1 
C. ? = cos-1 
D. ? = 
cos-1 
Mathematics
Write the phrase as a variable expression. Use x to represent "a number."The quotient of 4 and a number, added to -17
A. -17 + 
B. 4 + x + (-17)
C. 
D. -17 + 
Mathematics
Provide an appropriate response. A coffee company mixes 1.6 lb of French Roast beans with every 3.3 lb of Kona beans. How many pounds of French Roast are needed to make 3,000 lb. of the coffee blend?
A. 2,020.4 pounds B. 979.6 pounds C. 1,875 pounds D. 1,454.5 pounds
Mathematics