Decide whether or not the given equation is an identity.sin(45° + x) = sin x + cos x
A. Yes
B. No
Answer: B
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Which expression(s) is(are) true? 1. A plane as a geometric figure that has position but no length, width, or depth. 2. Points are labeled with capital letters. 3. A plane extends infinitely far in both directions, but has no width or depth. 4. Planes are made up of points. 5. A line is a flat surface, extending infinitely far in every direction, that has length and width but no depth.
A. 1, 2, 3, 4 B. 2 , 4 C. 1, 2, 4, 5 D. 1, 2
Convert as indicated. If necessary, round to the nearest tenth of a degree.A weather forecaster has predicted a high temperature of 26°C for tomorrow. Find this temperature in degrees Fahrenheit.
A. 46.4°F B. -17.6°F C. 14.8°F D. 78.8°F
Complete the statement so that the indicated property is illustrated. Simplify the answer, if possible.-6r - 8r =
A. 8r - 6r = 2r B. -8r - 6r = -14r C. (-6 - 8)r = -14r D. (-6 + 8)r = 2r
Write the ratio as a fraction in lowest terms.3
to 3
A. 
B. 
C. 
D. 