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 97 earned runs in 223
innings. Round your answer to the nearest hundredth.
A. 20.72
B. 10.78
C. 2.30
D. 3.91
Answer: D
Mathematics
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Express the value of the inverse hyperbolic function in terms of natural logarithms.sech-1 
A. ln 
B. ln 
C. Undefined
D. ln 
Mathematics
Use estimation to determine which quotients is wrong.
A. 1,149,552 ÷ 27 = 42,576 B. 14,096,690 ÷ 86 = 163,915 C. 4,364,442 ÷ 174 = 20,083 D. 825,942 ÷ 39 = 21,178
Mathematics
Use a graphing calculator to find a viewing window that shows a complete graph of the given polynomial function (that is, a graph that includes all the peaks and valleys and indicates how the curve moves away from the x-axis at the far left and far right.) There are many possible correct answers.f(x) = x5 - 2x4+ 2x3 - 7x2 - 8x + 3
What will be an ideal response?
Mathematics
Find the sum or difference.
+ 
A. 
B. 
C. 
D. 
Mathematics