Find the indicated term of the arithmetic sequence.6, 13, 20, . . . ;12th term
A. 85
B. 90
C. 83
D. 82
Answer: C
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Solve.The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a planet has a perihelion of 455.7 million miles and a mean distance of 458 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Multiply.
A. 13,820 B. 13,830 C. 13,920 D. 13,720
Find the numerical value of the expression for 
and 
5x
A. a) 20 b) 90 B. a) 90 b) 20 C. a) 9 b) 23 D. a) 23 b) 9
Factor completely, or state that the polynomial is prime.x + 216x4
A. x(1 - 6x)(1 + 6x + 36x2) B. x(1 + 6x)(1 + 6x + 36x2) C. prime D. x(1 + 6x)(1 - 6x + 36x2)