Write one or more inequalities that describe the set of points.The slab bounded by the planes x = 2 and x = 8 (planes included)

A. 2 ? x ? 8
B. -? < y < ? and -? < z < ?
C. x = 2 and x = 8
D. x ? 2 and x ? 8


Answer: A

Mathematics

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Compute the expected age ? of a British nurse in 1851. Assume that the table below shows the age distribution of nurses in Great Britain in 1851. Round your answer to nearest hundredth.  Age range (yr)20-29 30-39 40-49 50-59 60-69 70-79 80+ Midpoint (x)24.5 34.5 44.5 54.5 64.5 75.5 84.5 Percent of nurses5.8% 9.8% 19.4% 29.1% 25.1% 9.1% 1.7%

A. 54.50 B. 59.50 C. 53.76 D. 53.79 E. 43.79

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Combine, if possible.3 + 5

A. 24
B. 8
C. 8(8- 4)
D. 8

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Simplify. ?  

A.
B.
C.
D.

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Simplify.140 ÷ (10 ÷ 2)

A. 135 B. 28 C. 14 D. 7

Mathematics