Solve the equation.-2x + 7(3x - 3) = 3 - 5x

A. {1}
B. {- 1}
C.
D.


Answer: A

Mathematics

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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.-6x - 5y - 10z = -6 and 9x + 4y - 10z = -4

A. 0.147 rad B. 1.453 rad C. 0.719 rad D. 1.424 rad

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Solve the problem.The charcoal from a tree killed in a volcanic eruption contained 68.5% of the  found in living matter. How old is the tree, to the nearest year? Use  for the half-life of 

A. 5700 years B. 1495 years C. 3111 years D. 2157 years

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Consider the points plotted in the graph below.Give the coordinates for point B.

A. (3, 4) B. (4, -3) C. (-3, 4) D. (-5, 4)

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Find the x-intercepts of the graph of the equation.y =  -  - 1

A. No x-intercepts B. -3, -1 C. 3, -1 D. 3

Mathematics