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3 years ago

Help help help help help

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

8 0

Answer:

3+6b+7b^2

Step-by-step explanation:

I got this by adding like terms

(2+1)

(4b+2b)

(3b^2+4b^2)

Hope this helps!

sweet [91]3 years ago

5 0

Answer:

3b²+ 4b² + 4b + 2b + 1 +2

7b² + 6b + 3

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Please help me out :)

Nataly [62]

The answer is 6

8 0

3 years ago

Solve for x: (4x - 6) (2x)

alexdok [17]

Answer:

I love algebra anyways

The ans is in the picture with the steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A certain electronics manufacturer found that the average cost C to produce x DVD/Blu- ray players can be found using the equati

lilavasa [31]

Answer:

The minimum average cost is $2.80 when 163 players are built

Step-by-step explanation:

Average Cost Function

We'll assume the given function as the total cost to produce x players, and NOT the average cost since that is a different definition, as shown below.

The cost C to produce x DVD/Blu- ray players is given by the equation

$C=0.03x^2-7x+800$

The Average Cost function is defined as

$\displaystyle\bar C=\frac{C}{x}$

$\displaystyle\bar C=\frac{0.03x^2-7x+800}{x}$

$\displaystyle\bar C=0.03x-7+\frac{800}{x}$

To find the extreme value of the average cost, we must take the first derivative of the function

$\displaystyle\bar C'=0.03-\frac{800}{x^2}$

Equating to 0

$\displaystyle 0.03-\frac{800}{x^2}=0$

Solving for x

$\displaystyle x=\sqrt{\frac{800}{0.03}}$

$x=163$

The second derivative is

$\displaystyle\bar C''=\frac{1600}{x^3}$

For x=163 the second derivative is positive, thus x=163 is a minimum value. Let's compute the minimum average cost

$\displaystyle\bar C(163)=0.03\cdot 163-7+\frac{800}{163}$

$\displaystyle\bar C(163)=2.80$

The minimum average cost is $2.80

5 0

3 years ago

the sum of three decimal numbers is 6 exactly one of the numbers is less than 1 what could the numbers be

sleet_krkn [62]

The 3 numbers could be 0.5, 1.1 and 4.4.

In the list above, there is only 1 number less than 1. It is 0.5.
The other 2 numbers are larger than 1.

If you add up the 3 numbers you will have exactly 6.

0.5 + 1.1 + 4.4 = 6

8 0

4 years ago

Is this a true or false solution? y = 12x; (3,32)

Elenna [48]

Substitute the x-value and see if you get the corresponding y-value. The corresponding y-value an x-value of 3 in this equation should be

$y = 12(3)$

$y = 36$

Since the coordinate (3,32) does not represent that, it is a false solution

4 0

4 years ago