The triangles are similar. Find the missing side, angle or value of the variable.?Z.
m?A = 47°
A. 43°
B. 133°
C. 53°
D. 47°
Answer: A
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Solve the problem.Joe Simpson bought 37 Woodward Corp. (WDW) bonds maturing 2010. According to a bond table, the last price is 
and the coupon rate is 10.250. Assuming a sales commission of $1 per bond, find the effective interest rate using total cost including commissions.
A. 11.6% B. 7.0% C. 11.7% D. 6.4%
Solve.Seven swimming pools for a major hotel chain have the shape and dimensions shown below. One supplier is providing a tile border for all of the pools. He needs to know the perimeter of all seven pools to get a cost estimate. Find the total perimeter.
A. 3010 ft B. 435 ft C. 3045 ft D. 430 ft
Find absolute maximum and minimum values of the function, if they exist, over the indicated interval. Where no interval is specified, use the real line. List your answers in terms of ordered pairs.
f (x) = sec2 x + tan2 x; (??/ 2, ?/ 2)
Use a proportion to solve the problem.In baseball, the average number of earned runs given up by a pitcher in 9 innings is the pitcher's earned run average, ERA. For example, if a player gave up 90 earned runs in 250 innings during one year, his ERA is found by solving the proportion 
Find the ERA for a player who, in one year, gave up 101 earned runs in 239 innings. Round your answer to the nearest hundredth.
A. 2.37 B. 21.30 C. 11.22 D. 3.80