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 10 in.
C. 4 in. by 9 in.
D. 5 in. by 9 in.
Answer: D
Mathematics
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Completely factor the polynomial or state that the polynomial is prime.x2 + 7x - 8
A. prime B. (x + 1)(x + 8) C. (x + 1)(x + 1) D. (x - 1)(x + 8)
Mathematics
Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.x-9 x5
A. - 
B. 
C. x4
D. -x4
Mathematics
Establish the identity.1 + sec2x sin2x = sec2x
What will be an ideal response?
Mathematics
Solve the problem.A bridge is built in the shape of a parabolic arch. The bridge arch has a span of 184 feet and a maximum height of 25 feet. Find the height of the arch at 15 feet from its center.
A. 2.7 ft B. 33.1 ft C. 0.2 ft D. 24.3 ft
Mathematics