2009-11-27_095521_WeeksevenMath

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```					1).

a). Solve. 5   = 35

b). Find the x-intercepts of f(x) = 5   - 35

a). What are the solutions? x=____-7,7_________________? (Type an exact answer
using radicals as needed. Rationalize all denominators, Express complex numbers in
terms of i. Use a comma to separate answers as needed.)

b) (-7,0),(7,0)

2). Give exact and approximate solutions to three decimal places.        = 49 What
are the exact solutions? x=_____2,16________________? (Type an exact answer
using radicals as needed. Rationalize all denominators, Express complex numbers in
terms of i. Use a comma to separate answers as needed.)

3). Give exact and approximate solutions to three decimal places.
What are the exact solutions? y=___7,11__________?(Type an exact answer using
radicals as needed. Rationalize all denominators, Express complex numbers in terms of
i. Use a comma to separate answers as needed.)

4). Solve by completing the square.

x= 11+131,11-131 ___________? (Use a coma to separate answers as needed.
Type exact answers, using radicals as needed.) Or, there is no solution.
5). Solve by completing the square. + 8x – 9 = 0 The solution is x=__1,-9________?
(Use a comma to separate answers as needed.) Or there is not solution.

6).

a). Solve.

b). Find the x-intercepts of f(x) =

a). What are the solutions? x=                   ___________? (Type an exact
numbers in terms of i. Use a comma to separate answers as needed.)

b)

7). Solve for x.                   x= -5+21, -5-21 _________? (Simplify your
radicals as needed.) Or, there is no solution.

8).

a). Solve.

b). Find the x-intercepts of f(x) =         .
a). What are the solutions? x=                    ________________? (Simplify your
Express complex numbers in terms of i. Use a comma to separate answers as needed.)

b)

9). Solve for x. 12(x – 4) – (x + 2) = (x + 2)(x – 4) The solution(s) is/are x=
6,7____________? (Use a coma to separate answers as needed.) Or, there is no
solution.

10). The flower garden has the shape of a right triangle. 15 ft of a perennial border
forms the hypotenuse of the triangle, and one leg is 3 ft longer than the other leg. Find
the length of the legs. What are the lengths of the legs? 9,12_________ft (Use a
comma to separate answers as needed.)

11). Solve for the indicated letter.

R=    , for C. Choose the correct expression for C. below.

a).    b).      c).      d).      ^2

12). Determine the nature of the solutions of the equation.

What does the solution have?

a). two real solutions b). one real solution. c). two non-real solutions

13). Determine the nature of the solutions of the equation. 9
The equation has

a). two non-real solutions. b). one real solutions. c). two real solutions.

14). Write a quadratic equation having the given numbers as solutions. – 4 and – 2 The
an expression using x as a variable.)

15). Write a quadratic equation in the variable x having the given numbers as a solution.
Type the equation in standard form, a + bx + c = 0. Solution: 10, only solution. The
equation is x2-20x+100_______= 0.

16). Solve.                        What is the solution? w =
needed. Use commas to separate answers as needed.)

Note: If you have to put complex answers too the answer is:

=              ,         ,             ,

17). Write a quadratic equation in the variable x having the given numbers as solutions.
Type the equation in standard form, a + bx + c = 0.              The equation is
= 0. (Type an expression using x as the variable. Type an exact

18). Solve the formula for the given letter. Assume all variables represent nonnegative
numbers.                , for a. Choose the correct value for a.

a).           b).            c).           d). Not given

19). During the first part of a trip, a canoeist travels 83 miles at a certain speed. The
canoeist travels 10 miles on the second part of the trip at a speed 5 mph slower. The
total tie for the trip is 5 hrs. What was the speed on each part of the trip?

The speed on the first part of the trip was__19.30___mph.

The speed on the second part of the trip was____14.30__mph.

(Simplify your answer. Type an integer or a decimal. Round to the nearest hundredth.)

20). Solve.      = - 1 Select the correct choice below and, if necessary, fill in the
answer box to complete your choice. x =___________? Or, there is no solution.
21). Solve.         = x + 5 Select the correct choice below and, if necessary, fill in the
answer box to complete your choice. The solution is x =___5______. (Use a comma to
separate answers as needed.) Or, the solution is not a real number.

22). Give exact and approximate solutions to three decimal places.                     The

exact solutions are_                     ________. (Use radicals as needed. Use a

Approximated to three decimal places_____1.193, -4.193_________?

23). Solve for x.           The solution(s) is/are x =___3,-2________. (Use a comma
to separate answers as needed.) Or, there is no solution.

24). Solve for r.                 r =_                   ______? (Use a comma to
there is no solution.

25). If a pro basketball player has a vertical leap of about 30 inches, what is his hang
time? Use the hang-time function V = 48 . His hang time is___0.8______seconds.
(Simplify your answer. Type an integer or a decimal. Round to the nearest tenth.)

26). Write a quadratic equation in the variable x having the given numbers as solutions.
Type the equation in standard form, a + bx + c = 0. Solution: 2, only solution; The
equation is x2-4x+4________= 0.

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