Solve the equation by making an appropriate substitution.(x2 - 3x)2 - 14(x2 - 3x) + 40 = 0
A. {4, 10}
B. {- 1, - 2, 4, 10, 4, 5}
C. {- 1, - 2, 4, 5}
D. {4, 5}
Answer: C
Mathematics
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Solve the problem.To measure the width of a river, a surveyor starts at point A on one bank and walks 75 feet down the river to point B. He then measures the angle ABC to be 
Estimate the width of the river to the nearest foot. See the figure below. C
A75 ftB
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Identify the place value of the underlined digit.68.
4
A. Tenths B. Hundredths C. Thousandths D. Tens
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Find the slope of the line x= -2.
A. 0
B. -2
C. 
D. undefined
E. none of these
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Convert the percent to a decimal.80%
A. 8 B. .8 C. .08 D. .69
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