Solve.S = 2?rh + 2?r2, for h
A. h = 2?(S - r)
B. h = 
C. h = S - r
D. h = 
- 1
Answer: B
Mathematics
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Determine whether the function is a solution of the wave equation.w(x, t) = cos (-6ct) sin (-6x)
A. Yes B. No
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Solve the problem.At step 1 in the construction of the Sierpinski gasket, there is 1 hole. At step 2 in the construction, there are 4 holes. How many holes are there at step 4 of the construction?
A. 121. B. 13. C. 10. D. 40. E. none of these
Mathematics
Simplify.6 ? 7 - 1
A. 36 B. 41 C. 42 D. 43
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Find the area of the circle. Use 3.14 or 
for ? as indicated.Find the area. Use 
for ?.
A. 
or 8
ft2
B. 
or 5
ft2
C. 
or 10
ft2
D. 
or 25
ft2
Mathematics