Solve the problem.The hypotenuse of an isosceles right triangle is 9 feet longer than either of its legs. Find the exact length of each side.
A. 9 + feet
9 + feet
18 + feet
B. 9 + 9 feet
9 + 9 feet
18 + 9 feet
C. 9 feet
9 feet
9 + 9 feet
D. 9 feet
9 feet
18 feet
Answer: B
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Factor the binomial completely. If it is prime, say so.9s2 - 16t4
A. (3s + 4t2)(3s - 4t2) B. (3s + 4t2)2 C. (3s - 4t2)2 D. Prime
Find an equation of a parabola that satisfies the given conditions.Vertex (5, 4), focus (5, 10)
A. 6(y - 4) = (x - 5)2 B. (y - 4)2 = 24(x-5) C. y - 4 = 24(x - 5)2 D. 24(y - 4) = (x - 5)2
Find the axis of symmetry of the quadratic function.f(x) = (x + 8)2 - 5
A. x = 5 B. x = 8 C. x = -8 D. x = -5
Solve the problem.Roberto invested some money at 8%, and then invested $5000 more than twice this amount at 12%. His total annual income from the two investments was $4760. How much was invested at 12%?
A. $3100 B. $31,000 C. $15,000 D. $26,000