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2 years ago

please help me with a math question. Do not report please. I need a good grade for chirstmas. 50 points.

Mathematics

1 answer:

Sliva [168]2 years ago

8 0

Answer: I would think

6-0

12-1

30-2

Step-by-step explanation:

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Solve the equation 3x^2<br> 10x + 5 = 0 to the nearest tenth.

galina1969 [7]

Exact form x= - 1/2 decimal form x=- 0.5

7 0

2 years ago

Let divf = 6(5 − x) and 0 ≤ a, b, c ≤ 12. (a) find the flux of f out of the rectangular solid 0 ≤ x ≤ a, 0 ≤ y ≤ b, and 0 ≤ z ≤

dusya [7]

Continuing from the setup in the question linked above (and using the same symbols/variables), we have

$\displaystyle\iint_{\mathcal S}\mathbf f\cdot\mathrm d\mathbf S=\iiint_{\mathcal R}(\nabla\cdot f)\,\mathrm dV$
$=\displaystyle6\int_{z=0}^{z=c}\int_{y=0}^{y=b}\int_{x=0}^{x=a}(5-x)\,\mathrm dx\,\mathrm dy\,\mathrm dz$
$=\displaystyle6bc\int_0^a(5-x)\,\mathrm dx$
$=6bc\left(5a-\dfrac{a^2}2\right)=3abc(10-a)$

The next part of the question asks to maximize this result - our target function which we'll call $g(a,b,c)=3abc(10-a)$ - subject to $0\le a,b,c\le12$ .

We can see that $g$ is quadratic in $a$ , so let's complete the square.

$g(a,b,c)=-3bc(a^2-10a+25-25)=3bc(25-(a-5)^2)$

Since $b,c$ are non-negative, it stands to reason that the total product will be maximized if $a-5$ vanishes because $25-(a-5)^2$ is a parabola with its vertex (a maximum) at (5, 25). Setting $a=5$ , it's clear that the maximum of $g$ will then be attained when $b,c$ are largest, so the largest flux will be attained at $(a,b,c)=(5,12,12)$ , which gives a flux of 10,800.

7 0

2 years ago

HELP QUICK!!

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

The clothing store already sold $300 .

They need to sell x jeans to get to $500.

$500 - $300

$200

They’re $200 short of their goal.

A pair of jeans cost $40

Therefore x40 = $200

x = 200/40

x = 5

So ,they need to sell 5 pairs of jeans to hit their $500 target

5 0

3 years ago

In statistics, the middle value of an ordered set of values is called what?

zaharov [31]

This is called the median.

8 0

2 years ago

(b) For a giveaway, a local radio station is putting together goodie bags. The bags will include tickets and posters. Each bag w

jolli1 [7]

6 goodie bags. 6 is the greatest common factor of 54 and 36.

<span>9 tickets and 6 posters in each bag.</span>

3 0

3 years ago