Solve the problem.In an economics study, three quantities m, p, and q have been found to be related by the equation m = p1/2 ? q1/2. Find m, if p = 16 and q = 25.

A. 100
B. 9
C. 20
D. 400


Answer: C

Mathematics

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Solve the problem.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 ft from a light is 2 foot-candles, find the intensity on a screen 15 ft from the light.

A. 2 foot-candles
B.  foot-candle
C. 1 foot-candles
D.  foot-candle

Mathematics

Write the system of linear equations that the augmented matrix represents. Use the variables x, y, and z.

A.

4x+ 6y+ 3z= -2
3x+ 5z= 4
8x+ 7y= 2

B.
4x+ 6y+ 3z= -2
5x+ 5z= -4
8x+ 7y= 2

C.
4x+ 6y+ 3z= -2
5x+ 5z= 4
8x+ 7y= 2

Mathematics

Graph the system of inequalities.x - 2y ? 2 x + y ? 0

A.

B.

C.

D.

Mathematics

Factor completely.x2 - 5x - 50

A. (x - 5)(x + 1) B. (x + 5)(x - 10) C. (x - 5)(x + 10) D. Prime

Mathematics