Solve the system of equations. x + 2y - 3z + w = 7 3x + 4y - z + 2w = 4-2x + y + z - w = -3 x - y + 2z - 2w = 1
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = 
between x = 2 and x = 7 using the "midpoint rule" with two rectangles of equal width.
A. 
B. 
C. 
D. 
Mathematics
Rewrite the polynomial in descending order.Rewrite a3 + 4a2b + 2b3 - 3ab2 in descending powers of b.
A. 2b3 + 3ab2 + 4a2b + a3 B. a3 + 4a2b - 3ab2 + 2b3 C. 2b3 + 4a2b - 3ab2 + a3 D. 2b3 - 3ab2 + 4a2b + a3
Mathematics
Graph the function
Mathematics
Solve the formula for the indicated variable.T = 2?
for L
A. L = 
B. L = 
C. L = 
D. L = 
Mathematics