Decide whether or not the given equation is an identity.sin(45° + x) = sin x + cos x

A. Yes
B. No


Answer: B

Mathematics

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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

Mathematics

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

Mathematics

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

Mathematics

Write the ratio as a fraction in lowest terms.3 to 3

A.  
B.  
C.
D.  

Mathematics