Provide an appropriate response.A square with sides of length 22 is inscribed in a circle and circumscribed about another circle. What is the area between the circles?
A. 11?
B. 121?
C. 121
D. 242?
Answer: B
Mathematics
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The population of the Earth is approximately 7 billion people and is growing at an annual rate of 2%. Assuming a Malthusian growth model, by what factor will the current population of the Earth increase in 50 years? Round to the nearest hundredths. ?
A. 19.03 B. 2.00 C. 7.00 D. 2.72 E. 7.72
Mathematics
Solve the problem.June has a strip of paper 42.4 inches long. She wants to cut it into strips that are 5.3 inches long. How many 5.3-inch strips will she get from the paper?
A. 8 pieces B. 9 pieces C. 80 pieces D. 7 pieces
Mathematics
Subtract.
- 
A. 
x4 + 
x2
B. 
x4 + 
x2 + 
C. 
x4 + 
x2 + 
D. 
x4 + 
x2
Mathematics
?Determine whether 
is a solution of the differential equation 
.
?
A. ?
B. ?
C. ??
D. 
E. 
Mathematics