Do the operation and express the answer in form.
?

?

A.
B.
C.
D.
E.


Answer: A

Mathematics

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Suppose that Celia rides her bicycle 57 miles in 3 hours less time than it takes Tom to ride his bicycle 102 miles. If Celia rides 2 miles per hour faster than Tom, find their respective rates. 

A. 12 mph, 14 mph B. 17 mph, 19 mph C. 19 mph, 21 mph D. 14 mph, 16 mph E. 21 mph, 23 mph

Mathematics

Find the length of the curve.The spiral r = 8?, 0 ? ? ? ?

A.
B. 4(? + ln (? + ))
C. 8
D. ((?2 + 1)3/2 - 4)

Mathematics

You randomly select one card from a 52-card deck. Find the probability of selecting the card in the problem.an ace or a 6

A.
B. 7
C.  
D.

Mathematics

Solve the problem.The number of television sets produced on an assembly line varies jointly as the number of employees working on the line and the number of hours they work. If 40 workers produce 90 televisions in 3 hours, how many televisions can be produced by 118 employees working for 6 hours? Round your answer to the nearest number of televisions.

A. 534 B. 531 C. 538 D. 526

Mathematics