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igor_vitrenko [27]
2 years ago
7

I need to know how to factor -8x^2 - x +9. I get confused when I factor out the -1. Please if you can show me it would be great!

Thanks!
Mathematics
1 answer:
jeyben [28]2 years ago
4 0
Favor out a-1 as long as you do it to the whole problem it is now equivalent then just worry about factoring the new product
-1(8x^2+X-9)
(8x+9)((X-1)
8x+9=0
Subtract 9 divide by 8
X=-9/ 8 answer
X-1=0 X=1 answer


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HELP PLEASE I WILL MARK YOU AS A BRAINLIEST THANK YOU!!!
nikdorinn [45]

Answer:

try b

Step-by-step explanation:

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3 years ago
A soda company produces 12 oz cans of soda. The mean volume is 12 oz with a
Lena [83]

Answer:

456

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1 year ago
X + 4 is prime x2 – 9 can be factored using the formula.
Anna71 [15]

We are given two binomials: x+4 , x^2-9.

x+4 can't be factored. Therefore,  it is a prime.

Let us work on x^2-9.

9 could be written as 3^2.

Therefore, x^2-9 = x^2 - 3^2.

Now, we can apply difference of the squares formula to factor it.

We know a^2 -b^2 = (a-b) (a+b).

Therefore,  x^2 - 3^2 can be factored as (x-3) (x+3).

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3 0
3 years ago
Read 2 more answers
There are 850 Douglas fir and Ponderosa pine trees in a section of forest bought by Karamazov Logging Co. The company paid an av
ki77a [65]

Answer:

350 Douglas fir, 500 Ponderosa pine

Step-by-step explanation:

 Let f = the number of fir trees

and p = the number of pine trees.

Then, we have two conditions:

(1)                                f + p = 850

(2)                  300f + 225p = 217 500

(3)                                    p = 850 -f         Subtracted f from each side of (1)

(4)       300f + 225(850 - f) = 217 500     Substituted (3) into (3)

      300f + 191 250 - 225f = 217 500     Distributed 225

                    75f + 191 250 = 217 500     Distributed the 7

                                    75f = 26 250      Subtracted 191 250 each side

(5)                                     f = 350

                             350 + p = 850           Substituted (5) into (1)

                                        p = 500          Subtracted 350 from each side

The company bought 350 fir trees and 500 pine trees.

Check:

(1) 350 + 500 = 850     (2) 300 × 350 + 225 × 500 = 217 500  

              850 = 850                  105 000 + 112 500 = 217 500

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OK.

8 0
3 years ago
Determine the equation of the line with slope 3 that passes through the point M(1.2).<br> ?
guapka [62]
Y = 3x - 1

The format for slope intercept form is:

y = mx + b

m represents the slope and that was given so:

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Now we have to substitute the value from the given point into “y” and “x” to solve for “b”

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Now that we know b we can substitute it into y = 3x + b to get the equation of the line

y = 3x - 1

~~hope this helps~~
5 0
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