Question

How do you solve 2650= -x^2+105x?

Answer 1

Umm,

x^2-105x+2650=0

Here

a=1,b=-105 and c=2650

when we compare it to

standard equation of quad formula :)

\[ax^2+bx+c=0\]

Now use Quadratic formula,

\[x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

Just plug in the values and find x :)

Answer 2

how would I do that?

Answer 3

x^2-(SOR)x+POR=0

Answer 4

I never learned the quadratic formula and how to use it., how do you do that?

Answer 5

I gave you the formula

You just put the values
a=1,b=-105 and c=2650

in it and solve for x :)

Answer 6

but when I put in the values it wanted the square root of 425, its not a perfect square, what do I do?

Answer 7

Leave it as it is.

Answer 8

But it wants me to fill in a blank for an answer and it says it should be just one number,

Answer 9

So you have options ?

Answer 10

I don't think that's the right equation.
The original problem is:
A company's monthly profit, P, from a product is given by P = −x2 + 105x − 1050, where x is the price of the product in dollars. What is the lowest price of the product, in dollars, that gives a monthly profit of $1,550?

Answer 11

No options

Answer 12

I don't want to live on this planet anymore :P

Answer 13

I started with that then I added 1050 to both sides and then the equation was 2650=-x^2+105x?

Answer 14

Now a=1,b=-105 and c=2600

Answer 15

1550+1050=2600

Answer 16

@hero lol :P

Answer 17

@Hero You are playing two methods here not me,so you are confusing her :P

Answer 18

I'm confused???

Answer 19

Haha lol :P @hero See what you did ^^

Answer 20

How am I supposed to solve this problem ???

Answer 21

a=1,b=-105 and c=2600

in Quadratic formula

Answer 22

I tried the quadratic formula, idk how this relates to the original question, I think it wants one number for an answer.
The question was: A company's monthly profit, P, from a product is given by P = −x2 + 105x − 1050, where x is the price of the product in dollars. What is the lowest price of the product, in dollars, that gives a monthly profit of $1,550?

Answer 23

@noelleallheart11 Now your values have changed try it again

Answer 24

But it won't let me enter a square root as part of the answer, and 425 is not a perfect square

Answer 25

How am I supposed to find the original question so that its just one number that isn't a fraction or decimal for an answer?

Answer 26

She used c= 2650 the first time @Hero when she solved it.

Answer 27

Isn't that what it's supposed to be?

Answer 28

No c=2600

Answer 29

So now try a=1,b=-105 and c=2600
in Quad.Formula

Answer 30

whats the quadratic formula again?

Answer 31

Scroll up please

Answer 32

You can use breaking the middle term as shown by @Hero