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Bas_tet [7]
3 years ago
9

Please can we solve this problem together?​​

Mathematics
1 answer:
Lana71 [14]3 years ago
3 0

Answer:

The expressions for x is -8y.

Step-by-step explanation:

If we let the expressions equals to 0 :

\frac{x + 8y}{4}  = 0

x + 8y = 0  \times 4

x + 8y = 0

x =  - 8y

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Solve using derivatives.
Bond [772]

Answer:

Below in bold.

Step-by-step explanation:

The surface area of the box

= x^2 + 4hx  where x = a side of the square base and h is the height.

So x^2 + 4hx = 8

The volume of the box

V = x^2h

From the first equation we solve for h

4hx = 8 - x^2

h = (8 - x^2) / 4x

Now we substitute for h in the formula for the volume:

V = x^2 * (8 - x^2) / 4x

V =  8x^2 - x^4 / 4x

V =  2x - 0.25x^3

Finding the derivative:

V' = 2 - 0.75x^2 =  0  for max/mimn values

x^2 = 2/ 0.75 = 2.667

x = 1.633.

So the  length and width of the base is 1.633 m and the height

= ( 8 - 2.667) / (4*1.633)

= 0.816 m

The maximum volume =  0.816 *  2.667 =  2.177 m^2.

The answers are correct to the nearest thousandth.

7 0
3 years ago
1. What is the reason for Statement 3 of the two-column proof?
OLEGan [10]

1. Angle addition postulate (this could be wrong)

2. Definition of bisect

3. Definition and postulate

4. Screenshot at the bottom

Last one I can't help, my bad.

3 0
3 years ago
Read 2 more answers
Investigate the link between Pascal's triangle and 2 and its powers
lina2011 [118]

Answer:

Outside of probability, Pascal's Triangle is also used for: Algebra, where coefficient of polynomials can be used to find the numbers in Pascal's triangle.  Pascal's Triangle is an arithmetical triangle you can use for some neat things in mathematics.

The entries in Pascal's triangle are actually the number of combinations of N take n where N is the row number starting with N = 0 for the top row and n is the nth number in the row counting from left to right where the n = 0 number is the first number.

The mathematical formula for the number of combinations without repetition is N!/(n!(N-n)!).

Step-by-step explanation:

To construct Pascal's triangle, start with a 1. Then, in the next row, write a 1 and 1. It's good to have spacing between the numbers. In the third row, we have 1 and 1 on the outside slopes. The 2 comes from adding the two numbers above and adjacent. Thus, we are adding the number on the left, 1, with the number on the right, 1, to get 1 + 1 = 2.

In the next row, the 3 comes from adding the 1 and the 2. This particular Pascal's triangle stopped at 1 5 10 10 5 1, but we could have continued indefinitely.

6 0
4 years ago
30 ounces is how many pounds
Effectus [21]

the answer is 1.875 pounds

5 0
3 years ago
Please help will give brainliest
NISA [10]

Answer:

answer would be B : (0, -8); x = 0

Step-by-step explanation:

6 0
3 years ago
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