Find the product.(6x - 5y + 7)(6x - 5y - 7)
A. 12x2 - 10y2 - 98
B. -60xy - 42x + -35y - 49
C. 36x2 + 60xy - 25y2 - 98
D. 36x2 - 60xy + 25y2 - 49
Answer: D
Mathematics
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Perform the necessary operations.20 - (-18) + 21 + (-19)
A. -42 B. 42 C. 40 D. 2
Mathematics
Evaluate the expression x - y for the given values of the variables.x = 5.422, y = -0.29
A. -5.132 B. 5.132 C. 5.712 D. 5.812
Mathematics
Write the decimal point in the correct location. 7.173 ÷ 0.3 = 2391
A. 2.391 B. 239.1 C. 23.91 D. 2391.0
Mathematics
Solve the problem. Round the answer to the nearest tenth, if necessary.A rope connects the top of a pole to the ground. The rope is 15 yd long and touches the ground 11 yd from the pole. How tall is the pole?
A. 52 yd B. 13 yd C. 10.2 yd D. 5.1 yd
Mathematics