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IrinaK [193]
3 years ago
8

What is the value of f(x) = –x2 – 2 when x = –1?

Mathematics
1 answer:
djyliett [7]3 years ago
8 0
0 because the -x cancels out the ones negative and 1 x 2 is 2. And 2-2 is 0
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A quality control inspector samples 2 computer chips from a box containing 13 computer chips. If the box contains 3 defective ch
elena-14-01-66 [18.8K]

Answer:

The number of ways to select a sample of 2 computer chips so that at least one of the chips is defective is 33 ways.

Step-by-step explanation:

The box contains 13 computer chips. Of these 13 chips 3 are defective and 10 are good.

A quality control inspector samples 2 computer chips.

The number of ways to select at least 1 defective chip is:

n (At least 1 defective chip) = n (1 defective chip) + n (2 defective chips)

The number of ways to select 1 defective chip is: {3\choose 1}{10\choose 1}=3\times10=30 ways.

The number of ways to select 2 defective chips is:{3\choose 2}{10\choose 0}=3\times1=3 ways.

n (At least 1 defective chip) = n (1 defective chip) + n (2 defective chips)

                                             = 30 + 3

                                             = 33

Thus, the number of ways to select a sample of 2 computer chips so that at least one of the chips is defective is 33 ways.

5 0
3 years ago
Consider the diagram showing the path Joel biked.
Tems11 [23]

Answer:

He would 36 miles all together.

Step-by-step explanation:

Consider the diagram showing the path Joel biked. Joel biked 9 miles east and then 12 miles north. If he biked back to his starting point using the most direct route, he would have ride 36 miles all together. Joel’s starting point is x.

In order to solve this, we must use the Pythagorean theorem.

The amount of miles would be found by adding the 3 sides together to find the sum or answer.

15 + 9 + 12 = 36 miles

4 0
3 years ago
Read 2 more answers
Use the shell method to find the volume of the solid generated by revolving the regions bounded by the curves and lines about th
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The two curves intersect when

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\displaystyle2\pi\int_0^2x(6-5x+x^2)\,\mathrm dx=\boxed{\frac{16\pi}3}

That is, each cylindrical shell has a radius of x and height (6-5x)-(-x^2)=6-5x+x^2, and their contribution to the total volume is 2\pi times the radius and height.

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3 years ago
For which pair of functions is the exponential consistently growing at a faster rate than the quadratic over the interval 0s χ&l
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So in order to get this answer you must develop what is so called the breathing style
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2 One six-sided die and one sixteen-sided die are rolled. What is the probability of rolling an even number on the six-sided die
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Answer:

C

Hope that helps!

Step-by-step explanation:

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