Find the acute angle, in radians, between the lines.-4x - 7y = -1 and 6x - 9y = 2
A. 2.678 radians
B. 0.4636 radians
C. 1.107 radians
D. 0.4472 radians
Answer: C
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Graph the linear equation.
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Solve the right triangle ABC with C = 90°. Your answer should give an angle in decimal degrees when given an angle in decimal degrees and in degrees and minutes when given an angle in degrees and minutes. Use the rules for significant digits.A = 40.82°, b = 13.5 ft
A. B = 49.18°, a ? 11.66 ft, c ?17.84 ft B. B = 49.18°, a ? 11.66 ft, c ? 20.65 ft C. B = 49.18°, a ? 11.7 ft, c ? 17.8 ft D. B = 49.18°, a ? 11.7 ft, c ? 20.7 ft
Fill in the blank with one of the words or phrases listed below. 
When two lines intersect, four angles are formed. Two of these angles that are opposite each other are called 
angles.
A. vertical B. adjacent C. supplementary D. complementary
Determine the most appropriate metric unit to go in the blank. Choose from L, ml, kg, g, and mg.The tablet contained 580 
of vitamin C.
A. g B. mL C. kg D. mg E. L