Use the rules for working with measurements.The area of a circle is 157 
. Find its radius.r = __________ ft
Fill in the blank(s) with the appropriate word(s).
7.07
Mathematics
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The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 1/4, y = -6
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics
Use properties of rational exponents to simplify the expression. Assume that any variables represent positive numbers.z-2/5 ? z3/5
A. z1/5 B. z6/5 C. z5/6 D. z-1/5
Mathematics
Find the sum.
A. 37 B. 39 C. 74 D. 20
Mathematics
Solve the problem.The number of miles per gallon of gasoline that a vehicle averages varies inversely as the average speed the car travels. A vehicle gets 15 miles per gallon at 57 mph. How many miles per gallon will it get at 
A. 9.2 mpg B. 0.11 mpg C. 0.04 mpg D. 24.4 mpg
Mathematics