Simplify.30(-21) + 14(-11)
A. 784
B. 11,550
C. 76
D. -784
Answer: D
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Divide. Be sure your answer is simplified.-5 ÷ 
A. - 
B. - 
C. - 
D. - 10
Rewrite the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the trigonometric expression without the use of a calculator.cos2 60° - sin2 60°
A. - 
B. - 
C. 
D. 
Provide an appropriate response.Explain how you would find the x intercept of a line with an equation of the formAx + By = C.
What will be an ideal response?
If you have ever ridden on a chair lift at a ski area and had it stop, you know that the chair will pull down on the cable, dropping you down to a lower height then when the chair is in motion. The figure shows a gondola that is stopped. Find the magnitude of the tension in the cable toward each end of the cable if the total weight of the gondola and its occupants is 1880 pounds.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
?a? = 71.8, ?b? = 75.8
?
?
__________ lbs
?
__________ lbs
What will be an ideal response?