Solve the problem.Find the center of mass of the first-octant portion of homogeneous solid sphere of radius 2 centered at the origin.

A. () = 
B. () = 
C. () = 
D. () = 


Answer: B

Mathematics

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A patient's forearm is x-rayed from a distance (FFD) of 45cm with the current level set at 100mA. If a second x-ray is to be taken using the same time exposure as the first but with the current level set at 50mA, what distance should be used?

A. 32cm B. 23cm C. 90cm D. 15cm

Mathematics

Solve the problem.To make orange juice from concentrate powder, you need to mix 1.5 teaspoons of the concentrate in 8 ounces of water. How much concentrate powder do you need for 1 gallon of water?

A. 7.5 teaspoons B. 3 teaspoons C. 12 teaspoons D. 24 teaspoons

Mathematics

Rewrite the fractions using the least common denominator., and 

A. , and 
B. , and 
C. , and 
D. , and 

Mathematics

Use the graph of a power function and transformations to sketch the graph of the polynomial function.f(x) = (x - 3)5

A.

B.

C.

D.

Mathematics