Solve the problem using Gaussian elimination.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. B requires 1 black, 2 white, and 1 red. C requires 2 black, 1 white, and 2 red. They used 100 black, 110 white and 90 red wires. How many of each cable were made?
A. 20 cable A
30 cable B
10 cable C
B. 10 cable A
30 cable B
20 cable C
C. 10 cable A
30 cable B
93 cable C
D. 10 cable A
103 cable B
20 cable C
Answer: B
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Find the center of mass of a thin plate of constant density covering the given region.The region enclosed by the parabolas y = - x2 + 18 and y = x2
A. = 0,
= 18
B. = 0,
=
C. = 0,
= 9
D. = 9,
= 0
Find the volume of the solid. Use for ?.
A. 18 cu in.
B. 55 cu in.
C. 13 cu in.
D. 2 cu in.
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