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3 years ago

Does anyone know how to solve one of these ?

Mathematics

1 answer:

BigorU [14]3 years ago

6 0

Sorry, But no. I hope you figure it out :)

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What is the greatest common factor of the polynomial below? 8x^2-4 A.4x B.2x C.4x^2 D.2x^2

Vadim26 [7]

none of those are right it is 4 because there is no x behind the 4.

5 0

3 years ago

HELP ME PLEASEEEEEEEE

Mamont248 [21]

Answer: Gas

Explanation: Gas is a colorful comment in the galaxy that is found between stars.

Hope that helped! Happy holidays.

8 0

3 years ago

Jorge compro en la papeleria 3 Borradores y 2 lápices, por ellos pago $47.50. si la suma de lo que cuesta un borrador y un lápiz

sp2606 [1]

Answer:

Cost of each pencil = $12.5

Cost of each eraser = $7.5

Step-by-step explanation:

Given:

Number of eraser bought = 3

Number of pencil bought = 2

Total amount paid = $47.50

Cost of one pencil and one eraser = $20

Find:

Each cost

Computation:

Let;

Cost of each eraser = e

Cost of each pencil = p

So,

e + p = 20

e = 20 - p .................................... eq1

3e + 2p = 47.50

3(20 - p) + 2p = 47.50

60 - 3p + 2p = 47.50

-p = -12.5

Cost of each pencil = $12.5

e = 20 - p

e = 20 - 12.5

e = 7.5

Cost of each eraser = $7.5

3 0

3 years ago

You are constructing a cardboard box with the dimensions 2 m by 4 m. You then cut equal-size squares ( x by x squares) from each

romanna [79]

Answer:

x = 0.423 m

Step-by-step explanation:

Volume of the box = length × width × height

The height is given by the length of a side of the square.

height = x

The width and height are gotten by subtracting twice the side of the square form each dimension of the cardboard (since two squares are cut along each dimension).

length = 4 - 2x

width = 2 - 2x

Volume, $V = x(4-2x)(2-2x) = 8x - 12x^2 + 4x^3$

To find the maximum, we differentiate V with respect to x and equate the derivative to 0.

$\dfrac{dV}{dx} = 8-24x+12x^2 = 0$

Simplify by dividing by 4.

$2-6x+3x^2 = 0$

Using the quadratic formula,

x = 0.423 m or x = 1.577 m

To determine which values gives maximum, we differentiate the first derivative which gives

$\dfrac{d^2V}{dx^2} = -6+6x$

The maximum value occurs when $\dfrac{d^2V}{dx^2}$ is negative.

At x = 1.577,

$\dfrac{d^2V}{dx^2} = -6+6(1.577) = 3.462$

This is positive, so it is minimum.

At x = 0.423,

$\dfrac{d^2V}{dx^2} = -6+6(0.423) = -3.462$

This gives a negative value. Therefore, it is a maximum.

Hence, the maximum volume is obtained when x = 0.423 m.

6 0

3 years ago

15. A city's sales tax is 0.07. Write this decimal as a fraction and tell how many cents of tax are on each dollar.

jeyben [28]

The fraction would be 7/100 and there is 7 cents of tax per dollar.

6 0

3 years ago