First round each number to one non-zero digit. Then perform the calculation using the rounded numbers to obtain an estimate.72.9 - 5.49
A. estimate: 75
B. estimate: 66
C. estimate: 74
D. estimate: 65
Answer: D
Mathematics
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Find the derivative.s = t5 cos t - 6t sin t - 6 cos t
A. 
= - t5 sin t + 5t4 cos t - 6t cos t
B. 
= - t5 sin t + 5t4 cos t - 6t cos t - 12 sin t
C. 
= - 5t4 sin t - 6 cos t + 6 sin t
D. 
= t5 sin t - 5t4 cos t + 6t cos t
Mathematics
Evaluate the root function at the given x-value. Round to the nearest hundredth when appropriate.f(x) = - 
, x = -8
A. -7 B. -8 C. 7 D. 8
Mathematics
Find the slope of the line that goes through the given points.(-9, -7), (-3, 9)
A. - 
B. - 
C. 
D. 
Mathematics
Differentiate.
g (x) = 2 sec x + tan x
Mathematics