All categories

3 years ago

PLease answer and explain number 8 and 9 for 10 points and brainlest

Mathematics

1 answer:

Whitepunk [10]3 years ago

4 0

I think it has to be orange x green

You might be interested in

A company's profit C (in thousands of dollars) can be modeled by the polynomial function C = - 5x ^ 3 + 6x ^ 2 + 15x , where x i

steposvetlana [31]

Answer:

849 items.

Step-by-step explanation:

Given that the profit C (in thousands of dollars) for x thousands of items related as

$C = - 5x ^ 3 + 6x ^ 2 + 15x \\\\\Rightarrow -5x^3+6x^2+15x -C=0\cdots(i)$

As the profit is $14,000 for producing 2000 items, so

C= 14 thousand dollars and

x= 2 thousand items.

Putting C= 14 in the equation ( we have),

$-5x^3+6x^2+15x -14=0\cdots(ii)$

Now, x=2 is one of the solutions to the equation (ii), so (x-2) is a factor of the equation (ii), we have

$(x-2)(-5x^2-4x+7)=0 \\\\\Rightarrow x-2=2 \; or \; -5x^2-4x+7=0$

We have the given solution for x-2=0, so sloving -5x^2-4x+7=0 for other solutions.

$-5x^2-4x+7=0 \\\\\Rightarrow x= \frac {-(-4)\pm \sqrt {(-4)^2-4\times (-5)7}}{2\times (-5)} \\\\\Rightarrow x= \frac {4\pm \sqrt {156}}{2\times (-5)} \\\\\Rightarrow x= \frac {4\pm 12.49}{2\times (-5)} \\\\\Rightarrow x = \frac {4+ 12.49}{2\times (-5)}, \frac {4- 12.49}{2\times (-5)} \\\\\Rightarrow x = -1.649, 0.849$

As the number of items cant be negative, so x= 0.849 thousand is the other number of items.

Hence, the other number of items for the same profit is 849 items.

4 0

3 years ago

Last year, Bob used 10 bottles of shampoo and 8 bottles of conditioner. His sister, Kayla, used 7 bottles of shampoo and 6 bottl

REY [17]

The lower ratio would be bob and that dude need to slow down the hair stuff

10 to 8 ratio is about 8.00
7 to 6 ratio is about 9.00

im not to good at math so dubble cheek just in case hope i could help tho

rip my spelling

6 0

4 years ago

2/11 + (4/11 + 1/11) = (2/11 + 4/11) + 1/11<br>Solve with step

aniked [119]

Answer:

$\frac{7}{11} = \frac{7}{11}$

Step-by-step explanation:

$\frac{2}{11} + ( \frac{4}{11} + \frac{1}{11} ) = ( \frac{2}{11} + \frac{4}{11} ) + \frac{1}{11} \\ \frac{2}{11} + \frac{5}{11} = \frac{6}{11} + \frac{1}{11} \\ \frac{7}{11} = \frac{7}{11} \\$

3 0

3 years ago

Long division of 764 divided by 4, must show work

castortr0y [4]

764 divided by 4 is
141

4 can go into 7 once with the remander of 1 then u bring down ur 6 and it gives u 16. 4 can go into 16 4 times without any remanders and thenu are left with 4. 4 goes into 4 one time and then u get the answer 141

6 0

4 years ago

Solve the inequality, show your work, and graph is on the number line

Dennis_Churaev [7]

Download got it and see if it answers faster

5 0

4 years ago