Provide an appropriate response.A line passes through the points (4, 7) and (4, 4). The equation of this line is ? . The slope of the line is ? .
A. y = 4; undefined
B. y = 4; 0
C. x = 4; undefined
D. x = 4; 0
Answer: C
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Solve the problem.In statistics, the sampling distribution of the random variable Z = 
is the standard normal distribution, where 
is the sample mean, ? is the population mean, ? is the population standard deviation, and n is the sample size. Simplify this expression.
A. Z = 
B. Z = 
C. Z = ?
(
- ?)
D. Z = 
Solve the system of equations. x -y + 5z = -45x+ z = 0 x + 4y +z = 16
A. (0, 4, -4) B. (4, 0, 0) C. (0, 0, 4) D. (0, 4, 0)
Find the quotient.(40x8 + 30x5 - 10x3) ÷ (-5x3)
A. -8x5 + 30x5 - 10x3 B. -8x5 - 6x2 + 2 C. 40x5 + 30x2 - 10 D. -8x8 - 6x5 + 2x3
Solve the problem.A bag contains 8 red marbles, 5 blue marbles, and 2 green marbles. If one marble is selected at random, determine the probability that it is blue.
A. 
B. 
C. 
D. 