Tuesday

October 21, 2014

October 21, 2014

Posted by **Queta** on Friday, September 6, 2013 at 4:05pm.

A. The statement is never true.

B. the statement is true when x =0.

C. The statement is true when x is negative.

D. The statement is always true.

My answer was B.

2. Solve for x in the equation x^2 - 2 x - 15 = 0 .

A. ( -3 , -5)

B. ( 3 , -5 )

C. (-3 , 5)

D. ( 3 , 5 )

My answer is C.

3. Select the approximate values of x that are solutions to f ( x ) = 0 , Where f ( x ) = 2 x^2 + 4 x + 9

A. ( -0.22 , 0.44 )

B. ( -2 , 4 )

C. ( -2.00 , -4.50)

D. ( -1.35 , 3.35 )

My answer is B.

4. f ( x ) = 3 x ^2 + 8 x + 3

A. ( 3.00, -0.33 )

B. ( -3 , 8 )

C. ( -2.67 , -1.00)

D. ( -1.00,2.67)

My answer is C.

5. f ( x ) = 8 x ^2 + 7 x + 4

A. ( - 0.39 , 1.27 )

B. ( -8 , 7 )

C. (-0.88 , -0.50 )

D. ( -2.00 , 1.75 )

My answer is B.

6.Select the values of x that are solutions to the inequality 0 > x ^2 + 5 x -2

A. x E ( -5-square root 33 / 2 , -5+square root 33 / 2)

B. x E ( -5- square root 33/ 2 , -5 + square root 33 / 2 )

C. x E ( - 00, -5- square root 33 )/2 U ( -5 + square root 33, 00 / 2 )

D. x E ( -00, -5- square root 33 ) /2 U ( -5 + square root 33 , 00 /2 )

My answer is A.

- MATH I NEED HELP PLEASE -
**Queta**, Friday, September 6, 2013 at 5:17pmHello Stevie Can you please look over my work Thank you.

- MATH I NEED HELP PLEASE -
**Steve**, Friday, September 6, 2013 at 5:47pm#1 - no idea, since you don't show the statement below

#2 C is correct

#3 since the discriminant is negative, there are no real roots, so none of the choices is correct. Typo?

#4 I get -2.21, -0.45

That is, (-4±√7)/3

Typo?

#5 Again, no real roots. Typo?

#6 A and B look the same to me, but if A is

((-5-√3)/2 , (-5+√3)/2)

then (A) is correct.

I guess B is (-5) - (√3/2),...?

- MATH I NEED HELP PLEASE -
**Queta**, Sunday, September 8, 2013 at 9:42amThank you Steve

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