Find the exact value. Do not use a calculator.cos 
A. - 
B. - 
C. 
D. 
Answer: B
Mathematics
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Determine whether the relation is a function. Give the domain and range.{(7, -9), (-3, 0), (3, 7), (-1, -3)}
A. function; domain: {-3, -1, 3, 7}; range: {-9, -3, 0, 7} B. not a function; domain: {-3, -1, 3}; range: {-9, -3, 0, 7}
Mathematics
Find the exact value by using a sum or difference identity.cos (-135°)
A. - 
B. - 
C. 1
D. - 
Mathematics
Supply the missing numbers. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent.fractiondecimalpercent
A. 0.676 67.6% B. 0.556 5.56% C. 0.676 676% D. 0.556 55.6%
Mathematics
Simplify the expression by combining like terms.4ab + 7ab - 35ab
A. 24ab
B. 
ab
C. 
a2b2
D. 24a2b2
Mathematics