Add or subtract. Express the answer as a mixed number.19
- 
A. 17
B. 18
C. 18
D. 19
Answer: C
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Solve using the problem-solving strategy for systems of linear equations.Two angles are supplementary if the sum of their measures is 180°. The measure of the first angle is 6° less than four times the second angle. Find the measure of each angle.
A. first angle = 37.2° second angle = 142.8° B. first angle = 142.8° second angle = 37.2° C. first angle = 40.8° second angle = 139.2° D. first angle = 139.2° second angle = 40.8°
Solve and graph. Write the solution set in set-builder and interval notation.6z - 12 ? 5z - 6
A. {z| z ? 6}; [6, ?)
B. {z| z < 6}; (-?, 6)
C. {z| z > 6}; (6, ?)
D. {z| z ? 6}; (-?, 6]
Write percent as decimal.629%
A. 0.629 B. 62.9 C. 629 D. 6.29
Tell whether the statement is true or false.Some rational numbers are integers.
A. True B. False