MATH I NEED HELP PLEASE
posted by Queta on .
1. Which of the following conclusions is true about the statement below?
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 ( 5square 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.

Hello Stevie Can you please look over my work Thank you.

#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),...? 
Thank you Steve

cOO;