Find the slope of the line.The x-axis
A. 0
B. Not defined
C. -1
D. 1
Answer: A
Mathematics
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Find an explicit formula for an.7, -7, 7, -7, 7, . . .
A. an = 7(-1)n B. an = 7(-1)2n-1 C. an = 7(-1)n+1 D. an = 7(-1)2n+1
Mathematics
Use scientific notation to perform the computation. Leave the answer in scientific notation.
A. -3.0 × 10-2 B. 3.0 × 10-2 C. -3.0 × 102 D. 3.0 × 102
Mathematics
Solve the equation.6(x + 7) = (6x + 42)
A. {0} B. {84} C. no solution D. all real numbers
Mathematics
Solve the problem.An airplane has an air speed of 550 miles per hour bearing N30°W. The wind velocity is 50 miles per hour in the direction N30°E. To the nearest tenth, what is the ground speed of the plane? What is its direction?
A. 552.3 mph; N24.8°W B. 552.3 mph; N54.8°W C. 576.6 mph; N25.7°W D. 526.8 mph; N55.3°W
Mathematics