Solve the equation for the indicated variable.S = 2?rh + 2?r2, for h
A. h = S - r
B. h = 2?(S - r)
C. h = 
- 1
D. h = 
Answer: D
You might also like to view...
Find a general term for the geometric sequence.5, 25, . . .
A. an = 20n-1 + 5 B. an = 5 - 25n C. an = 5(5)n-1 D. an = 20n - 15
Describe the inverse of the statement.Add 4 to x and multiply the result by 2.
A. Divide x by 2 and then subtract 4.
B. Subtract 4 from x and divide the result by 2.
C. Add -4 to x and multiply the result by 
.
D. Multiply x by 2 and then add 4.
Find the fraction of a complete rotation that corresponds to the given angle. 30°
A. 
B. 
C. 
D. 
Radium - 221 has a half-life of 30 s. Suppose we have a 300 g sample. (a) Find a formula for the mass remaining after t seconds. (b) How much of the sample remains after 200 seconds? (c) After how long will only 20 g remain?
What will be an ideal response?