Translate the sentence into an equation using the variable x.The total of a number and 8.6 is equal to 18.6.
A. x = 8.6 + 18.6
B. x + 8.6 = 18.6
C. x + 18.6 = 8.6
D. x - 8.6 = 18.6
Answer: B
Mathematics
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Solve the proportion.
= 
A. 
B. 
C. 108
D. 
Mathematics
Write an equation in x that models the conditions. Do not solve the equation.10.9% of 42 is what number (x)?
A. 0.109 = 42x B. x = 42 + 0.109 C. x = 42 ? 0.109 D. x = 0.109 ? 42
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Use an appropriate identity to find the exact value of the expression.cos (285°)
A. - 
B. - 
(
+ 1)
C. - 
(
- 1)
D. 
Mathematics