Simplify.(9x7)(2x5)
A. 18x12
B. -18x35
C. 18x35
D. -18x12
Answer: A
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Perform the division.
?
?
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Fill in the blank(s) with the appropriate word(s).
The percent of light that will pass through a material is given by the formula lgP = -kd, where P is the percent of light passing through the material (in fractions), k is a constant that depends on the material, and d is the thickness of the material in centimeters. The constant k for a piece of tinted glass is 0.4. How thick (in centimeters) is a piece of this glass that allows 50% of the light incident to the glass to pass through it? Round to the nearest hundredth of a centimeter.
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