Combine like terms.7x + 4 + 5x + 4
A. ( 7x + 5x) + (4 + 4)
B. 20
C. 2x + 8
D. 12x + 8
Answer: D
Mathematics
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Use McKay's theorem to find a rational number between the two given rational numbers.
and 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the equation by the square root method.2x2 + 5 = 13
A. {-3, 3} B. {2} C. {6.5} D. {-2, 2}
Mathematics
Add or subtract as indicated. Make sure that your answer is reasonable by estimating first.91.221 + 183.272 + 7.654
A. 200.0481 B. 282.147 C. 117.2022 D. 351.033
Mathematics
If necessary, write the equation in the standard form ax2 + bx + c = 0. Then identify the values of a, b, and c. Do not actually solve the equation.(x - 1)2 = 6
A. a = -1, b = -2, c = 7 B. a = 1, b = -2, c = -5 C. a = -1, b = 2, c = 5 D. a = 1, b = 1, c = 1
Mathematics