Use the Distributive Property to remove the parentheses.-4(r + 2)
A. -4r - 2
B. -4r + 8
C. r - 8
D. -4r - 8
Answer: D
Mathematics
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Compute r''(t).r(t) = (cos 3t)i + (2 sin t)j
A. r''(t) = (-3 cos 3t)i + (2 sin t)j B. r''(t) = (-9 cos 3t)i + (-4 sin t)j C. r''(t) = (9 cos 3t)i + (-2 sin t)j D. r''(t) = (-9 cos 3t)i + (-2 sin t)j
Mathematics
Solve the system by substitution.x + 6y = 132x + 12y = 14
A. (1, 2) B. (1, 1) C. (2, 2) D. No solution
Mathematics
Find an equation for the hyperbola described.center at (8, 1); focus at (2, 1); vertex at (7, 1)
A. (x - 8)2 - 
= 1
B. (x - 1)2 - 
= 1
C. 
- (y - 1)2 = 1
D. 
- (y - 8)2 = 1
Mathematics
Solve the problem.In the city of Gloomville, the probability of rain on New Year's Day is 65%. What is the probability that next New Year's Day it will not rain in Gloomville?
A. -65% B. 35% C. 65% D. 42.25%
Mathematics