Porcelain figurines are sold for $10 if flawless, and for $3 if there are minor cosmetic flaws. Of the figurines made by a certain company, 90% are flawless and 10% have minor cosmetic flaws. In a sample of 100 figurines that are sold, let Y be the revenue earned by selling them and let X be the number of them that are flawless.
a. Express Y as a function of X.
b. Find 
.
c. Find 
.
(a) Y = 10X + 3(100 - X) = 7X + 300
(b) 
(c) 
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Name four kinds of glue used for fastening lumber
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During the 1892 presidential election, large numbers of Southern white farmers refused to desert the Democratic Party and support the Populist Party because
A. they did not think the Populists represented their political interests. B. they were not experiencing the same hard times as Midwestern farmers. C. the history of racial division in the region made it hard to cooperate with blacks. D. they believed that too many Populists were former Republicans. E. they could not accept the Populists' call for government ownership of the railroads, telegraph, and telephones.
The three-hinged parabolic arch in Figure P6.24 supports 60-kip load at the quarter points. Determine the shear, axial load, and moment on sections an infinitesimal distance to the left and right of the loads. The equation for the arch axis is y = 4hx 2 /L 2 .
