Perform the indicated operation. Write the answer in scientific notation.
A. 4.2 × 10-9
B. 8.4 × 107
C. 8.4 × 10-9
D. 4.2 × 107
Answer: A
Mathematics
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Perform the operation and give the answer in Hindu-Arabic form. src="https://sciemce.com/media/4/ppg__ttt0612191108__f1q181g6.jpg" alt="" style="vertical-align: 0.0px;" height="19" width="17" />
+ 
A. 1213
B. 1231
C. 2131
D. 2113
Mathematics
Find a quadratic function that best fits the data. Give answers to the nearest hundredth.
A. y = 0.29 - 6.14x + 12 B. y = -0.83x2 + 1.68x + 12 C. y = 0.83x2 + 1.68x + 12 D. y = -x2 + 12
Mathematics
Add or subtract. Assume all variables represent nonnegative real numbers.6
- 3
- 
A. 15x
B. 2x
C. 14x
D. 3x
Mathematics
Perform the transformation.Write cos x in terms of sin x.
A. 
B. 
C. 
D. ± 
Mathematics