Simplify the expression. Assume that all variables are positive when they appear.
A. 2x5
B. -2x5
C. -2x15
D. -2x12
Answer: B
Mathematics
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Use the order of operations to find the value of the expression.42 - 8 ÷ 22 ? 4 - 6
A. 10 B. 2 C. -2 D. -4
Mathematics
Provide an appropriate response.Solve the equation by using quadratic formula. Use a calculator and give your answer by rounding off to 2 decimal places: .5x2 - 4.8x + 1.9 = 0
Fill in the blank(s) with the appropriate word(s).
Mathematics
Write the terminating decimal as 
in simplest form where a, b ? I and b ? 0.11.25
A. 
B. 4
C. 
D. 
Mathematics
Evaluate the trigonometric function. Round the answer to two decimal places.cos 31°
A. 0.91 B. 0.82 C. 0.95 D. 0.86
Mathematics