Solve the problem.If cos ? = 0.7, find the value of cos ? + cos (? + 2?) + cos (? + 4?).
A. 0.7
B. 4.1
C. 2.1 + 6?
D. 2.1
Answer: D
Mathematics
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Find the volume.A cube measuring 22 m on each edge
A. 11,000 m3 B. 960 m3 C. 66 m3 D. 480 m3
Mathematics
Factor.z2 - 4z + 4
A. (z - 4)(z + 4) B. (z + 2)2 C. (z - 2)2 D. (z - 2)(z + 2)
Mathematics
Find the slope and the y-intercept of the line.4x - 5y = 5
A. Slope - 
; y-intercept (0, 1)
B. Slope -1; y-intercept (0, -1)
C. Slope 1; y-intercept (0, 1)
D. Slope 
; y-intercept (0, -1)
Mathematics
Find the indicated sum.Find the sum of the first 837 even positive integers.
A. 701,406 B. 702,244 C. 699,732 D. 700,569
Mathematics