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vovangra [49]
3 years ago
6

A shipment of ball bearings with a mean diameter of 25 mm and a standard deviation of 0.2 mm is normally distributed. By how man

y standard deviations does a ball bearing with a diameter of 25.6 mm differ from the mean?
Mathematics
1 answer:
LiRa [457]3 years ago
4 0
The choices for this question can be found elsewhere and as follows:

0.6
1
2
<span>3
</span>
We calculate as follows:

Mean = 25 mm
Standard Deviation = 0.2 mm
Value = 25.6 mm

25.6 - 25 = .6 mm
.6 mm / 0.2 mm = 3

Therefore, the correct answer is the last option, 3.

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On a factory floor, 20 out of every 170 toy robots is defective. what percent of the toy robots are defective? round your answer
Rom4ik [11]

Answer:

11.76%

Step-by-step explanation:

Because you have to divide 20/70 and get 0.1176. Then you have to multiply 0.1176*100 and get 11.76. So, your answer should be 11.76%

4 0
3 years ago
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Evelyn rolled two 1-6 number cubes 72 times. How many times should she predict she will roll a sum of 5
ANEK [815]
I think it's 12 times.
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5 0
3 years ago
Describe and correct the error in finding the product <br>2/5×3/10=6/50=3/25
Elis [28]

Answer: There is not error in finding the product. The result is: =\frac{3}{25}


Step-by-step explanation:

1. You have the following multiplication shown in the problem above:

\frac{2}{5}*\frac{3}{10}

2. To solve it you must multiply the numerators and multiply the denominators, as you can see below:

\frac{2*3}{5*10}=\frac{6}{50}

3. When you simplify the product, you obtain the following result:

=\frac{3}{25}


4 0
3 years ago
Choose the equation that represents the line passing through the point (2, - 5) with a slope of −3.
Brilliant_brown [7]

Answer:

y = -3x + 1

Step by step (I hope I don't confuse you):

1. First, look for the equation that has a slope of -3. In this case, it's all of them because they all have -3 before the x value.

2. Then look for what's given:

  • The y of (2, -5) is negative.
  • If the x is 2, that means that the slope has moved down 3 units twice. (-3 is the slope. -3 x 2 is -6.)

3. Now see what equation will have -5 when you subtract 6 from it's y intercept.

  • y = 3x + 11. 11 - 6 is 5, not -5. this one is wrong.
  • y = 3x - 13. -13 - 6 is -19, also incorrect.
  • y = 3x + 1. 1 - 6 is -5, so this is the correct answer.

Hope you found this helpful.

8 0
4 years ago
In order for the pH level of an acidic substance to be less than 2.25, the molar concentration of hydrogen ions, x, in the subst
Aleonysh [2.5K]

Answer:

It is B, (0.005623, ∞)

Step-by-step explanation:

I just did it on edge.

3 0
4 years ago
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