Find the exact value of the expression using a sum, difference, or double-angle identity.cos 
A.
B. -(
- 1)
C. (
- 1)
D. -
Answer: A
Mathematics
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Collect like terms and write in descending order.3y9 + 9y8 - 6y5 + 4
A. 6y22 + 4 B. Can't be simplified C. 10y22 D. 3y9 + 9y8 - 6y5
Mathematics
Provide an appropriate response.Solve the fractional equation, identifying excluded values if any.x +
x =
A.
B. 1
C. 1, x ? 2
D. , x ? 0
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Solve.Find the discount when the original price is $307.50 at a discount of 30%.
A. $9.23 B. $92.25 C. $215.25 D. $298.28
Mathematics
Find the slope of the line containing the two points.(-9, 3); (-9, 1)
A.
B. -2
C. 0
D. undefined
Mathematics