Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.3x + 4y + z = -172x - 4y - z = -83x + y + 4z = -8
A. (2, -1, -5)
B. (-5, -1, 2)
C. (-5, 2, -1)
D. No solution
Answer: B
Mathematics
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A. -11x2 + 7x B. -11x2 - 11x C. -11x2 - 7x D. -22x3
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Find an equation of a parabola that satisfies the given conditions.Focus (5, -5), directrix y = -9
A. (y + 5)2 = 8(x - 5) B. (x + 5)2 = 8(y + 7) C. (x - 5)2 = 8(y + 7) D. (x - 5)2 = 8(y + 5)
Mathematics
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A. True B. False
Mathematics
Carmencita is 12 years old and she is saving for a car. She wants to have $5,000 by the time she is 16 years old. She opens a savings account with an APR of 3.9% compounded weekly. How much should she deposit into her account each week to meet her goal?
What will be an ideal response?
Mathematics