Use addition to check the subtraction problem. If the answer is incorrect, find the correct answer.
186
A. Incorrect; should be 180
B. Incorrect; should be 185
C. Correct
D. Incorrect; should be 195
Answer: B
Mathematics
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Illustrate Goldback's conjecture for the following number.100
A. 49 + 51 B. 50 + 50 C. 47 + 53 D. 22 ? 52
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Find the eccentricity of the ellipse.4x2 + y2 = 36
A. 
B. 
C. 
D. 
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Match the property with the example of it.Identity property
A. 3x + 0 = 3x B. 3x ? 0 = 3x C. 3x - 3x = 0 D. 3x ? 0 = 0
Mathematics
Solve the problem by estimating.Linda scored 72, 95, 80, 78, 64, and 100 on her calculus tests. Round each score to the nearest ten to estimate her total score.
A. 500 B. 470 C. 480 D. 490
Mathematics