Use substitution to determine whether the system of linear equations has no solutions, one solution, or infinitely many solutions. x - 2y = 52x - 4y = 18
A. No solutions
B. Infinitely many
C. One
Answer: A
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Evaluate the integral which is given in cylindrical or spherical coordinates.
A. 5760 B. 95040 C. 51840 D. 8640
A farmer wishes to work out the average milk yield in his herd that consists of an equal number of Ayrshire, Friesian, Galloway, and Jersey cows.Suppose the farmer divides up his herd into the four sub-groups and randomly samples 3 cows from each subgroup. What type of sampling is being used?
A. quota sampling B. convenience sampling C. simple random sampling D. capture-recapture E. stratified sampling
Provide an appropriate response.It can be shown that a hyperbola with center at the origin, foci at F'(-c, 0) and F(c, 0), and equation 
has equation 
. Use this result to find an equation of a hyperbola with center at the origin, foci at (-6, 0) and (6, 0), and absolute value of the distances from any point of the hyperbola to the two foci equal to 6.
A. x2 - y2 = 6
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Plot the given point in the rectangular coordinate system.(0, -6)
A. 
B. 
C. 
D. 