Use the method of natural frequencies to find the indicated probability.Use the results summarized in the table.
One of the 100 test subjects is selected at random. Given that the person selected approves of the mayor, what is the probability that they vote Democrat?
A. 0.22
B. 0.391
C. 0.659
D. 0.333
Answer: B
Mathematics
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Find an equation of the line.
A. x = - 
B. y = - 
x
C. y = - 
D. x = 
Mathematics
Write the vector v in terms of i and j whose magnitude 
and direction angle ? are given.
= 10, ? = 120°
A. v = -5
i + 5
j
B. v = 5i - 5
j
C. v = -5i + 5
j
D. v = 5
i - 5j
Mathematics
Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300 B. $0.60 C. $1 D. $100
Mathematics
Evaluate the expression. Write answer without exponents.(5.08)1/2
A. 25.8064 B. 2.25389 C. 10.16 D. 0.03875
Mathematics