Perform the computation.(-49) - (-19)

A. -30
B. 68
C. 30
D. -68


Answer: A

Mathematics

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Solve the problem.Cathy scored 4 times as much as Helen on the test.Determine which of the statement's below is true.

A. Cathy's score was 400% of Helen's score. B. Helen's score was 300% less than Cathy's score. C. Cathy's score was 300% of Helen's score. D. Cathy's score was 400% more than Helen's score.

Mathematics

Solve. +  = 

A. No solution B. 4, 3 C. -6, 5 D. -3, -4

Mathematics

Give an expression that generates all angles coterminal with the given angle. Let n represent any integer.98°

A. 98° + n ? 180° B. 98° + n ? 360° C. 98° + n ? 720° D. 98° + n ? 90°

Mathematics

Find the product.(-9a + 5b)(-8a + 3b)

A. 72a2 - 67ab + 15b2 B. 72a2 + 67ab + 15b2 C. 72a2 + 13ab + 15b2 D. 72a2 + 15b2

Mathematics