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Roman55 [17]
2 years ago
5

The probability that the first stage of a numerically controlled machining operation for high-rpm pistons meets specifications i

s 0.90. Failures are due to metal variations, fixture alignment, cutting blade condition, vibration, and ambient environmental conditions. Given that the first stage meets specifications, the probability that a second stage of machining meets specifications is 0.95. What is the probability that both stages meet specifications?
Mathematics
1 answer:
lora16 [44]2 years ago
4 0

Answer:

There is an 85.5% probability that both stages meet specifications.

Step-by-step explanation:

We have these following probabilities:

A 90% probability that the first stage meets specifications.

If the first stage meets specifications, a 95% probability that the second stage also meets specifications.

What is the probability that both stages meet specifications?

This is the multiplication of these probabilities. So:

P = 0.9*0.95 = 0.855

There is an 85.5% probability that both stages meet specifications.

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The weights of 1,000 men in a certain town follow a normal distribution with a mean of 150 pounds and a standard deviation of 15
galina1969 [7]
Im not really sure but 45 sir :)
7 0
2 years ago
A business has $25,000 to spend on training sessions for its employees. It wants 45 of its employees to attend. The business wan
lilavasa [31]

Answer: x+y=45\\\\1000 x + 500y = $2500

Step-by-step explanation:

Let x =  Number of employees taking technology training

y= Number of employees taking customer service training

Given, The technology training costs $1,000 per person. The customer service training costs $500 per person.

Total cost = 1000 x + 500y

Since, Total cost = $25,000 and total employee to attend training= 45 .

That means , the required equations are:

x+y=45\\\\1000 x + 500y = $2500

5 0
2 years ago
Livia’s bill for lunch came to $8 before tax and tip. The restaurant included a 7 percent sales tax, and she left a 15 percent t
Serjik [45]
Take 8 times 7% and then take 8 time 15% add those numbers too $8 and you will find your answer. 7% = 7/100 and 15% = 15/100
8 0
1 year ago
Read 2 more answers
A stone is dropped into a barrel of water and sinks to the bottom. The ball is completely covered by water. By how much does the
Rom4ik [11]

Answer:

Answer: 5/12 or approx. 0.42

Step-by-step explanation:

The ball will displace as much water as its volume.

Meaning, the volume of the ball and the volume of the increase in water in the barrel will be equal.

Volume of a sphere:

V_s=\frac{4}{3} \pi r^3

The radius is half the diameter. The diameter of the sphere is 10, thus:

r = d/2 = 10/2 = 5

5^3 = 5*5*5 = 25*5 = 125

V_s=\frac{4}{3} \pi * 5^3=\frac{4}{3} \pi * 125

The volume of a cylinder, which will be the shape of the increase in water, is the following:

V_c=\pi r^2 h

We know the radius r, as we know the diameter.

r=d/2=40/2=20

V_c=\pi r^2 h=\pi h * 20^2 = \pi h * 400

We are looking for the height of the cylinder, h, as that will be the height of the water rise.

Since we know these 2 volumes are the same, we'll set them equal to each other and solve the equation:

V_s = V_c

\frac{4}{3} * 125 * \pi = 400 * h * \pi

We can get rid of pi by dividing both sides by pi:

\frac{4}{3} * 125 = 400 * h

And now divide both sides by 400:

\frac{4}{3} * \frac{125}{400}= h

Just reversing it and putting h to the left:

h = \frac{4}{3} * \frac{125}{400} = \frac{4 * 125}{3 * 400}

I see that I can divide both the numerator and the denominator by 4:

h =\frac{125}{3 * 100}= \frac{125}{300}

I'll now divide both the numerator and the denominator by 25 to simplify the expression:

h=\frac{125}{300} =\frac{125 / 25}{300 / 25} = \frac{5}{12}

Answer: The water rises by 5/12 (five twelfths).

If I want an approximate decimal answer, I can simply run this expression in a calculator:

\frac{5}{12} ≈ 0.416666667 ≈ 0.42

7 0
1 year ago
Rewrite in polar form: x=12.<br><br> I have r=12 sec theta
romanna [79]
To solve this problem you must apply the proccedure shown below:
 1. You have to r<span>ewrite x=12 in polar form. Then, you have:
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</span> 3. You have that 1/Cosθ=Sec<span>θ, therefore:
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</span> r=12Sec<span>θ
</span> Therefore, as you can see, the answer is: r=12Secθ<span>
 </span>
3 0
1 year ago
Read 2 more answers
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