Answer

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1. Write a quadratic equation in the variable x having the given numbers as solutions. Write the equation in standard form ax^2+bx+c=0 Solution: 6, only solution

x^2 - 12x + 36 = 0

2. Jack usually mows his lawn in 6 hours. Marilyn can mow the same lawn in 5 hours. How much time would it take for them to mow the lawn together.

30/11

or

2 8/11

3. Use rational exponents to write x^1/3 * y^1/7 *z^1/6

x^1/3 * y^1/7 *z^1/6

4. Find the following. Assume the variable can represent any real number.

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5. If the side of a square are lengthened by 8cm, the area becomes 196cm^2. Find the length of a side of the original square.

6

6. Find a polynomial for the perimeter and for the area.

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7. If a pro basketball player has a vertical leap of about 30 inches, what is his hang time? Use the hang time function V=48t^2
His hang time is ____ seconds.

0.79

8. Simplify by removing factors of 1.

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9. Television sets. What does it mean to refer to a 20-in tv set or a 25-in tv set? Such units refer to the diagonal of the screen. A 30-in tv set also has a width of 24 inches. What is its height in inches?

18

10. Rewrite with a rational exponent.

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11. In a right triangle, find the length of the side not given.

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12. Find all numbers for which the rational expression is undefined.

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13. Find the following

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14. Convert to decimal notation.
8.68 X 10^7

86800000

15. Find the variation constant and an equation of variation where y varies directly as x and y=40 when x=10.
The variation constant is k=______
The equation of variation is y=________

k = 4

y = 4x

16. For the following equation, state the value of the discriminant and then describe the nature of the solutions.

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17. Divide.
(28b^3+27b^2+22b+46) / (4b+5)

7b^2 - 2b + 8 + 6/(4b+5)

Expert:	abozer
Pos. Feedback:	99.9 %
Accepts:
Answered:	9/27/2008

Math Answer Team

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