Graph.2x + 4y = -20
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Prove that the equation is an identity.cos2 ? + 1 = 2 cos2 ? + sin2 ?
What will be an ideal response?
Mathematics
Solve the following quadratic equation using the Square Root Property. Make sure you simplify the final answer completely. Find the exact answer and a decimal approximation to the nearest tenth when possible.3x2 = 4
A. x = 
or x = - 
; x ? 1.2 or x ? -1.2
B. x = 
; x ? 1.2
C. x = 
; x ? 1.2
D. x = 
or x = - 
; x ? 0.7 or x ? -0.7
Mathematics
Solve.60% of what is 63?
A. 1050 B. 37.8 C. 105 D. 10.5
Mathematics
Solve the system. If the system's equations are dependent or if there is no solution, state this.3x + y = 53x - z = 1 y + z = 4
A. The equations are dependent. B. No solution C. (1, 4, 0) D. (0, 5, -1)
Mathematics