Solve the equation and check your solution.-16.6y = 232.4
A. -1.19
B. -215.8
C. -218.4
D. -14
Answer: D
Mathematics
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Find the area. Use 3.14 for ? as necessary.
A. 48 ft2 B. 96 ft2 C. 1152 ft2 D. 576 ft2
Mathematics
Factor the polynomial completely.25 - (r + 2t)2
A. (5 - r - 2t)2 B. (5 + r + 2t)(5 - r + 2t) C. (r + 2t + 5)(r + 2t - 5) D. (5 + r + 2t)(5 - r - 2t)
Mathematics
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.8w + 7x - 5y - 4z = -217w + 5x - 8y - 4z = -298w + 7x + 6y + 5z = 14-5w - 4x + 7y + 8z = 22
A. (2, -3, 4, -1) B. (2, 3, -4, -2) C. (-1, 4, -5, 2) D. No solution
Mathematics
Evaluate the expression when x is 
. Use exact values.
?
7 cos 3x
?
A. 0 B. 7 C. 3 D. 0 E. -3
Mathematics