Solve the system of four equations in four unknowns using matrices.9w + 8x - 5y - 4z = 198w + 6x - 8y - 4z = -29w - 8x + 6y + 5z = -35-5w - 4x + 8y + 9z = -1
A. (1, 5, 4, 2)
B. (-1, 5, 4, -2)
C. (-1, 4, -5, 2)
D. ?
Answer: B
Mathematics
You might also like to view...
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
Mathematics
Decide whether or not the matrices are inverses of each other.
and 
A. Yes B. No
Mathematics
The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = 
A. x2 = 10y - 25 B. x2 = 25 - 10y C. y2 = 10x - 25 D. y2 = 25 - 10x
Mathematics
The bar graph shows the number of tickets sold each week by the garden club for their annual flower show.
How many tickets were sold during week 4?
A. 40 tickets B. 46 tickets C. 59 tickets D. 19 tickets
Mathematics