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spin [16.1K]
3 years ago
6

What’s the answer ASAP will give brainlist

Mathematics
1 answer:
disa [49]3 years ago
7 0
It’s 1, looks like you got it lol
You might be interested in
6th grade math i mark as brainliest​
CaHeK987 [17]
The answer would be C, sorry if I’m wrong
5 0
3 years ago
[10 points] A manufacturer wants to design an open box having a square base and a surface area of 108 square inches. What dimens
MissTica

Answer:

  6 inches square by 3 inches high

Step-by-step explanation:

For a given surface area, the volume of an open-top box is maximized when it has the shape of half a cube. If the area were than of the whole cube, it would be 216 in² = 6×36 in².

That is, the bottom is 6 inches square, and the sides are 3 inches high.

_____

Let x and h represent the base edge length and box height, respectively. Then we have ...

  x² +4xh = 108 . . . . box surface area

Solving for height, we get ...

  h = (108 -x²)/(4x) = 27/x -x/4

The volume is the product of base area and height, so is ...

  V = x²h = x²(27/x -x/4) = 27x -x³/4

We want to maximize the volume, so we want to set its derivative to zero.

  dV/dx = 0 = 27 -(3/4)x²

  x² = (4/3)(27) = 36

  x = 6

  h = 108/x² = 3

The box is 6 inches square and 3 inches high.

_____

<em>Comment on maximum volume, minimum area</em>

In the general case of<em> an open-top box</em>, the volume is maximized when the cost of the bottom and the cost of each pair of opposite sides is the same. Here, the "cost" is simply the area, so the area of the bottom is 1/3 the total area, 36 in².

If the box has a <em>closed top</em>, then each pair of opposite sides will have the same cost for a maximum-volume box. If costs are uniform, the box is a cube.

7 0
3 years ago
If 3/4 of the library books are fiction and 5/7 are paperback what fraction of the books are fiction and paperback
Bess [88]

Answer:

15/38

Step-by-step explanation:

assuming the fraction of paperback in the fiction category is also 5/7, the fraction of the books which are fiction and paperback would just be the 2 fractions multiplied together.

3 0
3 years ago
The quantity demanded x for a product is inversely proportional to the cube of the price p for p &gt; 1. When the price is $10 p
LenaWriter [7]
Q(p) = k/p^3 . . . . . . . . we want to find k
q(10) = k/10^3 = 64
k = 64,000

Revenue = q(p)*p = 64000/p^2
Cost = 150 +2q = 150 +2*64000/p^3

Profit = Revenue -Cost = 64000/p^2(1 -2/p) -150

Differentiating to find the maximum profit, we have
.. dProfit/dp = -2(64000/p^3) +6(64000/p^4) = 0
.. -1 +3/p = 0
.. p = 3

A price of $3 per unit will yield a maximum profit.

7 0
3 years ago
What Is the value of the y-intercept of the graph of h(x)=29(5.2)^x
Elan Coil [88]

Answer:

  29

Step-by-step explanation:

Put x=0 into the function and do the arithmetic.

  h(0) = 29(5.2)^0 = 29(1)

  h(0) = 29 . . . . the y-intercept

6 0
3 years ago
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