Write the system of equations associated with the augmented matrix. Do not solve.
A. 6x - 2y + 8z = 8
-4x - 4y = 4
8x + 2z = -5
B. 6x - 2y + 8z = 8
-4x - 4y = 4
8x + 2y = -5
C. 6x - 2y + 8z = 8
-4x + -4z = 4
8x + 2y = -5
D. 6x - 2y + 8z = 8
-4x - 4y + 4z = 0
8x + 2y - 5z = 0
Answer: A
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Solve the right triangle.A = 19° 17', c = 287 ft, C = 90°Round side lengths to two decimal places, if necessary.
A. B = 70° 43', a = 94.21 ft , b = 270.01 ft B. B = 71° 42', a = 94.78 ft, b = 266.9 ft C. B = 70° 43', a = 94.78 ft, b = 270.9 ft D. B = 70° 42', a = 97.98 ft, b = 272.1 ft
Rewrite the following as indicated.
(Write as a percent.)
A. 15
%
B. 156
%
C. 78
%
D. 1
%
Solve the problem.If the formula P = 0.5643Y - 1092.57 can be used to predict the average price of a theater ticket after 1945, for what years will the average theater ticket price be at least 43 dollars? (Y is the actual year.)
A. 2015 or after B. 2013 or after C. 2023 or after D. 2011 or after
Find the sum or difference. Express the answer reduced to lowest terms and use the denominator given in the first rational expression.
- 
A. 
B. 
C. 
D. 11