If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.? = 
radians, A = 99 square meters, r = ?
A. 155.43 m
B. 38.86 m
C. 6.23 m
D. 15.88 m
Answer: D
Mathematics
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Use a trigonometric substitution to evaluate the integral.
A. 
sin-1 
+ C
B. tan-1 
+ C
C. 
tan-1 
+ C
D. 
ln 
+ C
Mathematics
Solve the equation.
= 1 + 
A. 10, -12 B. -30, 12 C. -10, 12 D. ?
Mathematics
The following table shows the earnings for the Juarez family last year. Use this information to answer the question.MonthEarningsMonthEarningsJan.$1400July$1300Feb.$1150Aug.$2450Mar.$2950Sept.$2500Apr.$2300Oct.$2000May$1650Nov.$2350June$2700Dec.$2400The family saved 
of their total income each month. How much savings did they have at the end of the year?
A. $888 B. $630 C. $810 D. $754.50
Mathematics
SD( X )
The probability density function of X is f (x) = 4/x5 over [1, x= ?). Compute the quantity.
Mathematics