Use the definition to find an expression for the instantaneous acceleration of an object moving with rectilinear motion according to the given function. The instantaneous acceleration is defined as the instantaneous rate of change of the velocity with respect to time. v = 4t2 - 7t + 1[v is the velocity]
A. 8t - 7
B. 8t2 - 7t
C. 4t - 7
D. 4t2 - 7
Answer: A
Mathematics
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Use sum-to-product formulas to rewrite the expression as a product.sin 6x - sin 2x
A. 2 sin 4x cos 2x B. 2 cos 2x cos 4x C. 2 sin 2x cos 4x D. 2 sin 2x
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If y varies directly as x, find the direct variation equation for the situation.y = 21 when x = 12
A. y = x + 9
B. y = 
x
C. y = 3x
D. y = 
x
Mathematics
Graph the inequality.y ? -x2 - 4x + 5
A. 
B. 
C. 
D. 
Mathematics
Solve for the specified variable.P = 
for r
A. r = 
B. r = 
C. r = 
D. r = P - tA
Mathematics