Write a formula to express the relationship. Use k as the constant of variation.The height h of a cone with a fixed volume varies inversely as the square of its radius r.
A. h = 
B. r2 = kh
C. h = kr2
D. h = 
Answer: D
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 7tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Mathematics
Express the sum or difference as a product.cos 4x + cos 2x
A. 2 sin 3x sin x B. 2 cos 3x sin x C. 2 cos 3x D. 2 cos 3x cos x
Mathematics
Divide using synthetic division.
A. 49x2 + 14x + 1 - 
B. 49x2 + 14x + 1 + 
C. 49x2 + 14x + 1 - 
D. 49x2 + 14x + 1 + 
Mathematics
Find the value of the variable that satisfies the equation.5x + 7 = 27
A. x = 15 B. x = 1 C. x = 4 D. x = 19
Mathematics