Solve the proportion.
= 
A. - 
B. -24
C. 105
D. - 
Answer: D
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Determine what the next equation would be, and verify that it is indeed a true statement.5 × 6 = 7 × 8 - (5 + 6 + 7 + 8)6 × 7 = 8 × 9 - (6 + 7 + 8 + 9)
A. 8 × 9 = 10 × 11 - (8 + 9 + 10 + 11) B. 7 × 8 = 9 × 10 - (5 + 6 + 7 + 8 + 9 + 10) C. 8 × 9 = 10 × 11 - (7 + 6 + 5 + 4) D. 7 × 8 = 9 × 10 - (7 + 8 + 9 + 10)
Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
y = 
y = -1
A. Since limx?-1+ f '(x) = -1 while limx?-1- f '(x) = 0, f(x) is not differentiable at 
B. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 1, f(x) is not differentiable at 
C. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = -1, f(x) is not differentiable at 
D. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 0, f(x) is differentiable at 
Simplify the expression.sin(? - x) cos x + cos(? - x) sin x
A. ? B. sin(2x + ?) C. 0 D. 1
Provide the requested response.For the viewing rectangle [1970, 2010, 10] by [13,000, 29,000, 1000] , state the number of tick marks on the positive x-axis.
A. 2 B. 7 C. 8 D. 5