Solve the equation for the indicated variable. Assume no denominator is 0.M = ?r2hd, for r
A. r = ±
B. r = 
C. r = 
D. r = 
Answer: C
Mathematics
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Evaluate.cos 
A. - 
B. 
C. 
D. 1
Mathematics
Determine ? in decimal degrees. Round results to an appropriate number of significant digits.cos ? = 0.759
A. 41.0° B. 41° C. 69.0° D. 69°
Mathematics
Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Mathematics
Find the slope and the y-intercept.x + y = 10
A. m = -1; (0, -10) B. m = 1; (0, 10) C. m = -1; (0, 10) D. m = 0; (0, 10)
Mathematics