Solve.Locate the centroid of a semicircular region.
A. 
= 
= 
= 
a
B. 
= 
= 
= 
a
C. 
= 
= 
= 
a
D. 
= 
= 
= 
a
Answer: C
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The sizes of two matrices are given. Find the size of the product AB and the size of the product BA, if the given product can be calculated.A is 1 × 3; B is 3 × 1.
A. AB is 1 × 1; BA cannot be calculated. B. AB is 1 × 1; BA is 3 × 3. C. AB is 3 × 3; BA is 1 × 1. D. AB cannot be calculated; BA is 3 × 3.
Use substitution to determine whether the given ordered pair is a solution of the given equation.(4, 3); x2 + y2 = 25
A. Yes B. No
Find the indicated probability.The table below describes the smoking habits of a group of asthma sufferers.
If one of the 1068 subjects is randomly selected, find the probability that the person chosen is a woman given that the person is a light smoker.
A. 0.137 B. 0.250 C. 0.066 D. 0.444
Determine whether the graph is the graph of a function.
A. Function B. Not a function