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3 years ago

What is the value of the expression below when x 4 and y = 2 4x + 107

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

8 0

Answer:

Step-by-step explanation:

I NEVEER LEARNED THAT YET SRRY

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Answer: C= 100+7n

Step-by-step explanation:

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2 years ago

How do I find surface area of a triangular pyramid

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3 years ago

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:

The least number of items to produce is 41

Step-by-step explanation:

Average Cost

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

You decided to throw a fair die four times.

Finger [1]

Answer:

If all you care about is whether you roll 2 or not, you get a Binomial distribution with an individual success probability 1/6. The probability of rolling 2 at least two times, is the same as the probability of not rolling 2 at zero or one time.

the answer is, 1 - bin(k=0, n=4, r=1/6) - bin(k=1, n=4, r=1/6). This evaluates to about 13%, just like your result (you just computed all three outcomes satisfying the proposition rather than the two that didn’t).

Step-by-step explanation:

7 0

2 years ago

Dimensions of a prism has a scale factor of 7/4 how will this affect surface area Plz help

Margaret [11]

The surface area will increase by a factor of 49/16

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3 years ago

What is the value of the expression below when x 4 and y = 2 4x + 107 ​

What is the value of the expression below when x 4 and y = 2 4x + 107