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2 years ago

Plz help me with the questions for math

Mathematics

2 answers:

Sonja [21]2 years ago

7 0

Answer:

2. 6/9

3.2/4

4. 8/10

Step-by-step explanation:

basically the idea is to find something in the same fact family so like the example on 1, follow that and try to answer the next problams on your own its really easy

( sorry if im wrong or not i tried to help)

Oksanka [162]2 years ago

7 0

Answer:

2/3 x 2/2= 4/6

2/3 x 4/4 = 8/12

1/2 x 2/2= 2/4

1/2 x 4/4=4/8

4/5 x 2/2= 8/10

4/5 x 4/4=16/20

Step-by-step explanation:

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Please help with my next question in math.

Vesnalui [34]

The answer is D. 2n + 1

8 0

2 years ago

Which of the following measurements, in centimeters (cm), could be the lengths of the sides of a triangle? Select all that apply

natima [27]

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6 0

2 years ago

Can someone help please

myrzilka [38]

<h3>Answer: 15x^(7/3) - 8x^(7/4) + x + 9000</h3>

=========================================================

Explanation:

If you know the cost function C(x), to find the marginal cost, we apply the derivative.

Marginal cost = derivative of cost function

Marginal cost = C ' (x)

Since we're given the marginal cost, we'll apply the antiderivative (aka integral) to figure out what C(x) is. This reverses the process described above.

$\text{Cost} = \text{antiderivative of marginal cost}\\\\\displaystyle C(x) = \int \left(35x^{4/3} - 14x^{3/4} + 1\right)dx\\\\$

$C(x) = \frac{1}{1+4/3}*35x^{4/3+1} - \frac{1}{1+3/4}*14x^{3/4+1} + x + D\\\\C(x) = \frac{1}{7/3}*35x^{7/3} - \frac{1}{7/4}*14x^{7/4} + x + D\\\\C(x) = \frac{3}{7}*35x^{7/3} - \frac{4}{7}*14x^{7/4} + x + D\\\\C(x) = 15x^{7/3} - 8x^{7/4} + x + D\\\\$

D represents a fixed constant. I would have used C as the constant of integration, but it's already taken by the cost function C(x).

To determine the value of D, we plug in x = 0 and C(x) = 9000. This is because we're told the fixed costs are $9000. This means that when x = 0 units are made, you still have $9000 in costs to pay. This is the initial value. You'll find that all of this leads to D = 9000 because everything else zeros out.

Therefore, we go from this

$C(x) = 15x^{7/3} - 8x^{7/4} + x + D\\\\$

to this

$C(x) = 15x^{7/3} - 8x^{7/4} + x + 9000\\\\$

which is the final answer.

3 0

1 year ago

Can I get help on 6 and 7

Aloiza [94]

The cost depend on the number pencils, so the cost is the y and # of pencils is the x
Same as for question 7
To graph, the length depend on the time, so length is y, time is x
6. Linear
7. Not