Find the difference.a + b, for a = 1 and b = -2
A. 3
B. 1
C. -1
D. -3
Answer: C
Mathematics
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Convert as indicated.20 L to gallons
A. 4.7 gal B. 5.3 gal C. 21.2 gal D. 9.0 gal
Mathematics
Solve using the percentage formula.What percent of 40 is 32?
A. 80% B. 120% C. 125% D. 75%
Mathematics
Using a calculator, evaluate the trigonometric functions. Round to four significant digits.cos 689°
A. -0.5150 B. 0.9998 C. 0.4848 D. 0.8572
Mathematics
Provide an appropriate response.Estimating your answer, in a subtraction problem, is not as advantageous as in an addition problem and should be avoided.
A. True B. False
Mathematics