Perform the indicated operations. Write the answer in simplest form.
? 
A. 
B. 
C. 
D. 9
Answer: C
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Subtract.-6.833 + 6.790
A. -0.043 B. -13.523 C. 46.396 D. -13.623
Solve the problem.When the angle of elevation of the sun is ?, a tree casts a shadow. Which trigonometric function models the length of the tree's shadow?
A. tan ? B. cos ? C. cot ? D. sin ?
Add.
A. 6,931,009 B. 6,941,009 C. 6,931,019 D. 7,931,009
Solve the problem.If an earthquake has an intensity of x, then its magnitude, as computed by the Richter Scale, is given by src="https://sciemce.com/media/4/ppg__tttt0617191139__f1q94g5.jpg" alt="" style="vertical-align: -4.0px;" /> on the Richter scale, how many times more intense (to the nearest whole number) is the second earthquake than the first?
A. 2
B. 19,952,623,150
C. 1,258,925
D. 8031
is the intensity of a small, measurable earthquake. (Consider 
for this problem.) If one earthquake has a magnitude 
on the Richter scale and a second earthquake has a magnitude