Answer the question.Choose the expression that is equivalent to the following: 0 + 4a
A. -4a
B. 4 + a
C. 0
D. 4a
Answer: D
Mathematics
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Write the fraction as a decimal.
A. 0.09 B. 0.00009 C. 0.9 D. 0.009
Mathematics
Solve the problem. Snell's Law states that 
Use this law to find the requested value. If 
and 
find 
A. c1 = 3 × 108 B. c1 = 2.67 × 108 C. c1 = 2.1 × 1010 D. c1 = 1.98 × 107
Mathematics
Find the exact value of the expression.sec 1215°
A. 2
B. 
C. - 
D. 
Mathematics
Multiply.3(2r + 7 + 2s)
A. 6r + 7 + 6s B. 6r + 21 + 6s C. 6r + 7 + 2s D. 6r + 21 + 2s
Mathematics