Solve.To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were interviewed. Of those polled, 88 had a swimming pool. How many people in the city might one expect to have a swimming pool? (Round to the nearest whole number, if necessary.)
A. 352 people
B. 3520 people
C. 28,409 people
D. 2 people
Answer: B
Mathematics
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Solve the equation.
- x = 4
A. 6 B. -6 C. -5 D. 5
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Find an equivalent expression.csc 
A. -csc x
B. sec x
C. - 
D. -sec x
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Decide what number must be added to the binomial to make a perfect square trinomial.x2 + 11x
A. - 
B. 
C. 
D. 22
Mathematics
Solve the problem.Determine the period and frequency of oscillation when a pendulum of length 7 feet is released after being displaced 2 radians. Round constants to 8 decimal places, if necessary.
A. Period = 2?
sec, frequency = 
cycles per sec
B. Period = 2?
sec, frequency = 
cycles per sec
C. Period = 7? sec, frequency = 
cycles per sec
D. Period = 
sec, frequency = 
cycles per sec
Mathematics