Decide whether or not the ordered pair is a solution of the system.(20, 4)y = 
x4x - y = 76
A. Yes
B. No
Answer: A
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Find the volume.A hemisphere with radius 2.0 ft. Use 3.14 for ?. Round your answer to the nearest thousandth.
A. 133.973 ft3 B. 16.747 ft3 C. 9.42 ft3 D. 8.373 ft3
In a certain city there is a river running through the middle of the city. There are three islands and nine bridges as shown in the figure below.
A graph that appropriately models this situation would have
A. 9 vertices and 5 edges. B. 5 vertices and 9 edges. C. 3 vertices and 9 edges. D. 9 vertices and 3 edges. E. none of these
Find an equation of variation if the following conditions exist.Suppose that y varies directly as z and y = 10 when z = 80.
A. y = 
z
B. y = 8z
C. y = -2z
D. y = - 
z
Translate the sentence into an equation and solve it.If four less than a number is thirteen, what is the number?
A. n - 13 = 4, n = 9 B. n - 4 = 13, n = 17 C. 4 - n = 13, n = -9 D. n = 13 - 4, n = 9