Answer the problem with a sentence containing the requested unit of measure. Write improper fractions as mixed numbers for U.S. measures and as decimals for metric measures.Shelly drove 140 miles on her last vacation. Express this number in kilometers.

A. Shelly drove 87.5 kilometers on her last vacation.
B. Shelly drove 175 kilometers on her last vacation.
C. Shelly drove 224 kilometers on her last vacation.
D. Shelly drove 112 kilometers on her last vacation.


Answer: C

Mathematics

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Inventory carrying costs:

A. include the costs of generating memos, fax transmissions, etc. associated with placing an order with a supplier. B. generally increase in proportion to the average amount of inventory held. C. are fixed regardless of the average size of the inventory. D. are equal to the sum of total inventory costs and total ordering costs. E. are at maximum when a firm's order is equal to optimal quantity.

Mathematics

Steel has been playing a decreasing role in the manufacture of beverage cans in the United States. The use of bimetallic cans has been dwindling, whereas the use of all-aluminum cans has been growing steadily. The accompanying table gives the production (in billions) of all-aluminum cans over the period from 1975 through 1989:

Year19751977197919811983198519871989Cans, y16.72633.348.35765.874.283.3?
Find an equation of the least-squares line for these data. (Let represent the year 1975.) Please round the coefficients in your equation to three decimal places. Use the result to estimate the number of cans produced in 1996, assuming the trend continued. Round the answer to three decimal places.
?

A.  billion cans
B.  billion cans
C.  billion cans
D.  billion cans

Mathematics

For the given equation, do the following:(a) Simplify the expression on each side of the equal sign. (b) See if 5 is a solution to both the given equation and the equation formed in part (a).4x + 2(x + 1) = 1 + 5x + 6

A. (a) 6x + 1 = 5x + 6; (b) 5 checks in both equations. B. (a) 6x + 1 = 5x + 7; (b) 5 does not check in either equation. C. (a) 6x + 1 = 5x + 7; (b) 5 only checks in the given equation. D. (a) 6x + 2 = 5x + 7; (b) 5 checks in both equations.

Mathematics

Express the product as a sum containing only sines or cosines.cos(4?) cos(3?)

A. [cos(7?) - sin ?]
B. cos2(12?2)
C. [ cos ? + cos(7?)]
D. [cos(7?) - cos ?]

Mathematics