Write the decimal point in the correct location. 11.8 km × 0.40 = 4720 km
A. 4720. km
B. 47.20 km
C. 4.720 km
D. 472.0 km
Answer: C
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Write a general formula to describe the variation.The illumination I produced on a surface by a source of light varies directly as the candlepower c of the source and inversely as the square of the distance d between the source and the surface.
A. I = 
B. I = kcd2
C. I = 
D. I = 
The polar coordinates of a point are given. Find the rectangular coordinates of the point.(4, 70°) Round the rectangular coordinates to two decimal places.
A. (1.59, 4.01) B. (1.37, 3.76) C. (4.01, 1.59) D. (3.76, 1.37)
Find the percent. Round to the nearest tenth of a percent, if necessary.909 is what percent of 1604?
A. 0.1% B. 176.5% C. 0.6% D. 56.7%
Use the product rule to simplify the expression. Write the result using exponents.(-7)4(-7)2
A. 496 B. 498 C. -76 D. (-7)6