Solve.The pitch of a screw is the distance between threads. With each complete rotation of the screw, it goes in or out a distance equal to its pitch. How far will a screw with a pitch of
in. go into a piece of wood when it is turned 10 complete rotations clockwise?
A. in.
B. in.
C. in.
D. in.
Answer: C
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Solve the problem.In a certain location, the highest temperature recorded was 101°F. The lowest temperature recorded was 140 degrees less than the highest. What was the lowest temperature?
A. 0°F B. -39°F C. -138°F D. 39°F
Solve the equation.x - = 3 -
A. -4, -2 B. -4, 2 C. -2, 4 D. 2, 4
Solve the linear equation.3(x - 5) + 8 = -(2 - x) - 25
A. -5 B. 5 C. 10 D. -10
Solve the problem.Doctors predict that by administering a vaccine, the number of new cases of a certain childhood disease will decrease by half each year. If 600 people were afflicted with the disease in 2000, estimate the number of new cases in 2005. (Round to the nearest whole number.)
A. 9 new cases in 2005 B. 75 new cases in 2005 C. 38 new cases in 2005 D. 19 new cases in 2005