Evaluate.(2x + 1)7/9
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Provide an appropriate response.One pipe can fill a certain tank in 40 minutes. A second pipe can fill the same tank in 30 minutes. How long will it take to fill the tank if both pipes are used? Round to the nearest hundredth minute.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Write using exponents.x ? x ? x ? x
A. 4x B. 4x C. x4 D. x2
Mathematics
Find the standard form of the equation of the circle.A circle with center at the origin contains the point (-9, -8). Find an equation of the circle.
A. x2 + y2 = 145
B. x2 + y2 = -17
C. x2 + y2 = 2
D. x2 + y2 = 
Mathematics
Find the magnitude of the vector and the angle 
, 
, that the vector makes with the positive x-axis.
?
?
?
A. ?
B. ?
C. 
D. ?
E. ?
Mathematics