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3 years ago

Simplify 3-4i/3+4i + 3+4i/3-4i

Mathematics

1 answer:

Shkiper50 [21]3 years ago

4 0

Answer:

-14/25

Step-by-step explanation:

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The function C(x)=−20x+1681 represents the cost to produce x items. What is the least number of items that can be produced so th

Reptile [31]

Answer:

<em>The least number of items to produce is 41</em>

Step-by-step explanation:

<u>Average Cost</u>

Given C(x) as the cost function to produce x items. The average cost is:

$\displaystyle \bar C(X)=\frac{C(x)}{x}$

The cost function is:

$C(x) = -20x+1681$

And the average cost function is:

$\displaystyle \bar C(X)=\frac{-20x+1681}{x}$

We are required to find the least number of items that can be produced so the average cost is less or equal to $21.

We set the inequality:

$\displaystyle \frac{-20x+1681}{x}\le 21$

Multiplying by x:

$-20x+1681 \le 21x$

Note we multiplied by x and did not flip the inequality sign because its value cannot be negative.

Adding 20x:

$1681 \le 21x+20x$

$1681 \le 41x$

Swapping sides and changing the sign:

$41x \ge 1681$

Dividing by 41:

$x\ge 41$

The least number of items to produce is 41

8 0

3 years ago

For the quadrilateral ABCD, E and F are midpoints of sides AD and BC respectively. AB = 15, BC = 29, CD = 34, AD = 11, and

uranmaximum [27]

Answer:

Step-by-step explanation:

7 0

3 years ago

What are two numbers that add up to 70 without regrouping?

dedylja [7]

Any of the tens i think (10=60, 20+50, etc.), but i am not too sure what is implied by regrouping. if i am right in thinking this only means "carrying" a digit after adding, then anything that adds up to 70 would work unless the sum of the digits in the ones place exceeded 9.

6 0

3 years ago

Anybody know how to answer this? Explain if you can, please :)

garik1379 [7]

Carrie is 2 and Kim is just born.
you can have,

Carrie = 3 4 5 6
Kim = 1 2 3 4

Or something like that, thats a table btw

5 0

3 years ago

yawa3891 [41]

Answer:

TBH I would go with either B or D.

Step-by-step explanation:

Well first off your going to 24 miles not 96 or 99 and it doesn't say how much they went on Monday or Tuesday

8 0

3 years ago

Read 2 more answers