Factor the expression. Express your answer so that only positive exponents occur. 9x2/7 - 10x-6/7
A. x-6/7(9x8/7 - 10x)
B. x2/7(9x8/7 - 10x4/5)
C. x1/3(9 - 10x4/5)
D. x-6/7(9x8/7 - 10)
Answer: D
Mathematics
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Perform the indicated arithmetic.19
- 
A. 19
B. 18
C. 17
D. 18
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Evaluate the expression
?
Fill in the blank(s) with the appropriate word(s).
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos 2? = - 
, 
< 2? < ?Find sin ?.
A. - 
B. - 
C. 
D. 
Mathematics
The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = cos ?
A. x2 + y2 = y B. (x + y)2 = y C. (x + y)2 = x D. x2 + y2 = x
Mathematics