Provide an appropriate response.Determine the measure of the acute angle ? for which cos ? = 
.
A. 45° 
B. 60° 
C. 30° 
D. 90° 
Answer: C
Mathematics
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Find the slope of the line through the points.(5, -9) and (6, 4)
A. 
B. - 13
C. - 
D. 13
Mathematics
Find the probability.The table lists the eight possible blood types. Also given is the percent of the U.S. population having that type.
Let E be the event that a randomly selected person in the U. S. has type B blood. Let F be the event that a randomly selected person in the U. S. has RH-positive blood.Find P(F|E).
A. 0.818 B. 0.340 C. 0.720 D. 0.107
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Find the function value.Find f(2) when f(x) = 2x2 - 5x + 7.
A. 1 B. 5 C. 25 D. -9
Mathematics
Graph the system of inequalities.2x + 3y ? 6 x - y ? 3 x ? 1
A. 
B. 
C. 
D. 
Mathematics