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3241004551 [841]
4 years ago
12

Between which two ordered pairs does the graph of f(x) = x2 + x – 9 cross the negative x-axis?

Mathematics
1 answer:
NemiM [27]4 years ago
8 0
<span>(-4,0) and (-3,0) = x</span>
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40 points to whoever can answer for me!
luda_lava [24]

Answer:

x≤-3      2 ≤x<7  

Step-by-step explanation:

(x^2+x-6) /(x-7) ≤0

Factor the numerator

(x+3)(x-2) / (x-7)≤0

Critical points are

X =-3  X =2  X=7

We need to check the values when

x≤3  -3 ≤ x≤2           2 ≤x<7   x>7  

(x cannot be 7 because then the denominator is zero)

and see when it is less than 0

Substitute a value in and see if factor is positive or negative

x≤-3

(negative)(negative) / (negative) =   negative

-3 ≤x≤2    

(positive)(negative) / (negative) = positive  this range does not work

      2 ≤x<7  

(positive)(positive) / (negative) = negative

x>7

(positive)(positive) / (positive)

8 0
4 years ago
Read 2 more answers
The perimeter of a flower garden with three sides is 46 feet. One side of the garden is 11 feet long. Another side of the garden
saul85 [17]

Answer:

<h2>22ft</h2>

Step-by-step explanation:

Step one:

given that the orientation of the garden is a triangular shape(it has three sides)

the perimeter is given as=46ft

one side y=11ft

the second side z= 13ft

let the third side be xft

Step two:

the expression for the perimeter = z+y+x

46=11+13+x

46=24+x

solve for x

x=46-24

x=22ft

Therefore the third side is 22ft long

7 0
3 years ago
What is the answer to 3/4 / 1/8?
Nataly [62]

Answer:

6

Step-by-step explanation:

\frac{3}{4}  \div  \frac{1}{8}  \\  =  \frac{3}{4}  \times 8 \\  = 3 \times 2 \\  = 6

4 0
3 years ago
Read 2 more answers
On Friday it snowed 3 4/7 inches. On Saturday it snowed 2/7 inches. How much more did it snow on Friday then Saturday? A. 3 2/7
xxTIMURxx [149]

Answer:

A

Step-by-step explanation:

Since on Friday it snowed 3 4/7 inches and Saturday ir snowed 2/7 inches, subtract the two numbers to find the difference.

3\frac{4}{7} -\frac{2}{7} =3\frac{4-2}{7} =3\frac{2}{7}

The answer is A.

5 0
4 years ago
110 is between blank and blank so 110 divided by 8 is between 13 and 14
mixas84 [53]
The 2 numbers required are 13*8 and 14  * 8
that is  104 and 117
5 0
4 years ago
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