Solve the problem.A square has an area of 49 square inches. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 square inches. Find the dimensions of the rectangle.
A. 3 in. by 4 in.
B. 5 in. by 9 in.
C. 4 in. by 9 in.
D. 5 in. by 10 in.
Answer: B
Mathematics
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Determine if the matrix is in row-echelon form.
A. No B. Yes
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Combine like terms whenever possible.5y + 8x4y - 8y + 5x4y
A. 13y + 13x4y B. -3y + 13x4y C. -6y + 26x4y D. -3y + 3x4y
Mathematics
Simplify.
3
A. 64x3
B. 
C. 
D. 
Mathematics
Decide whether or not matrix A and matrix B are inverses.A = 
and B = 
A. Yes B. No
Mathematics