Translate to a proportion and solve. 64 is 20% of what?
A. 3200
B. 12.8
C. 320
D. 32
Answer: C
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Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.A light-year is the distance that light travels in one year. Find the number of miles in a light-year if light travels 1.86 × 105 miles/second. (Round to one decimal place.)
A. 6.0 × 107 miles B. 6.0 × 1012 miles C. 6.0 × 1014 miles D. 6.0 × 105 miles
Decide if the answer is reasonable or unreasonable by rounding the numbers and estimating the answer. If the answer is not reasonable, find the correct answer.36.9 ÷ 4 = 92.25
A. Unreasonable, should be 0.9225 B. Reasonable C. Unreasonable, should be 0.09225 D. Unreasonable, should be 9.225
Solve the equation.3y(5y + 9) = 6
A. 
B. 
C. 
D. 
Graph the ellipse.
+ 
= 1
A. 
B. 