Write a formula for the nth term of the arithmetic sequence. Use the formula to find the 20th term of the sequence.a = - 
, d = - 
A. an = - 
n - 
; a20 = - 
B. an = - 
n + 
; a20 = - 46
C. an = - 
n - 
; a20 = - 
D. an = - 
n - 
; a20 = - 34
Answer: D
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Find the distance between the two points.(-5, -2) and (7, 6)
A. 4
B. 80
C. 4
D. 80
Solve the problem.The kind of symmetries found in the wallpaper pattern shown below are the identity and
A. translations and 180° rotations only. B. translations and vertical reflections only. C. translations and horizontal reflections only. D. translations only. E. none of these
Write the decimal number in words.5.00557
A. five and five hundred fifty-seven tenths B. five and five hundred fifty-seven hundred-thousandths C. five and five hundred fifty-seven millionths D. five and five hundred fifty-seven thousandths
Simplify.Rationalize the denominator. 
A. 
B. 
C. 
D. 