Solve the combined inequality. Write the solution in interval notation.4x + 7 < 7x + 4 < 14x - 1
A. 
B. (-?, ?)
C. 
D. ?
Answer: D
Mathematics
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Find dy/dt.y = cos7(?t - 20)
A. 7 cos6(?t - 20) B. -7? cos6(?t - 20) sin(?t - 20) C. -7 cos6(?t - 20) sin(?t - 20) D. -7? sin6(?t - 20)
Mathematics
Perform the indicated operation. Write the answer in scientific notation.
A. 2.64 × 10-1 B. 5.28 × 1015 C. 5.28 × 10-1 D. 2.64 × 1015
Mathematics
Use a calculator to find the trigonometric values. Express your answers in hundredths.tan 37°
A. -0.84 B. 0.75 C. 0.80 D. 0.60
Mathematics
Solve the equation.
+ y = -4
A. y = -26
B. y = - 
C. y = - 
D. y = 
Mathematics