Solve the equation for complex solutions.(x + 2)2 = -44
A. 2i
, -2i
B. -2 + 2
, -2 - 2
C. 2
- 2, 2
+ 2
D. -2 + 2i
, -2 - 2i
Answer: D
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Find the center of mass of the thin rod with the given density function.Find the center of mass of a thin rod that lies along the first-quadrant portion of the circle
if the density of the rod is 
A. 
= 
?, 
= 
?
B. 
= 
?, 
= 
?
C. 
= 6?, 
= 6?
D. 
= 0, 
= 
?
The following data show the diameter D and the height H, both in feet, of certain mature trees. Tree Cottonwood Hackberry Weeping willow Ponderosa pine Douglas fir D 2.4 5.06 6.07 8.06 14.08 H 80.87 113.1 95.05 164.81 223.23? A: Use power regression to model the height as a function of the diameter. Use two digits of accuracy for the coefficient and for the power.B: According to the model, what is the diameter of a mature tree that is 7.89 feet tall? Round your answer to two decimal places.C: If one mature tree has 4 times the diameter of another, how do their heights compare? Round your answer to two decimal places.
What will be an ideal response?
Solve the problem.How many ways can a president, vice-president, and secretary be chosen from a club with 12 members? Assume that no member can hold more than one office.
A. 1320 B. 220 C. 6 D. 36
Use the quadratic formula to solve the equation.5x2 + 12x = - 6
A. 
, 
B. 
, 
C. 
, 
D. 
, 