Answer the question.Describe two ways in which multiplying by 1 is used in adding or subtracting using fractional notation.
What will be an ideal response?
Multiplying by 1 is used to write each fraction with the least common denominator as its denominator and to simplify the sum or difference.
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Find possible value(s) of ? in the interval [0°, 360°) with the given trigonometric function value.cos ? = - 
A. 60°; 120° B. 210°; 330° C. 150°; 210° D. 60°; 300°
Decide whether or not the functions are inverses of each other.f(x) = 
, g(x) = 
A. No B. Yes; Exclude the value {-3} C. Yes
Use a calculator to find an approximate solution to the equation. Round your answer to the nearest thousandth.2m2 + 4m + 1 = 0
A. {-0.293, -1.707} B. {-2.225, -2.225} C. {-0.854, -0.146} D. {-2.707, -1.293}
Find the circumference of the circle. Then use the approximation 3.14 for ? and approximate the circumference.
A. 12.16 m B. 12.56 m C. 25.12 m D. 24.32 m