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nignag [31]
2 years ago
14

Simplify (3x − 5) (5x 1). 8x − 6 8x 4 8x − 4 2x − 4.

Mathematics
1 answer:
Tatiana [17]2 years ago
3 0

Answer:

8x-4

i remember being asked this question but i dont remember how to do it and i am sorry for that... but i know that it is 8x-4

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When you are determining The probability of an event why must the probability be between 0 and 1
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The probability of an event cannot be less than 0 because 0 means it's impossible. The probability of an event cannot be more than 1 because 1 means that it's certain that it will happen. That's why the probability must be between 0 and 1.

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What is the value of n in n/0.38= 5.89
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N=1191/5000 or 2.238
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X=55°

Y=30°

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Before lunch, Carol hiked 3 5/8 miles. After lunch, she hiked another 2 7/8 miles. How far did she hike altogether?
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6 6/8 or 6 3/4 simplified

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8 0
3 years ago
Specifications for an aircraft bolt require that the ultimate tensile strength be at least 18 kN. It is known that 10% of the bo
Darina [25.2K]

Answer:

Mean strength is 18.94 and your standard deviation is 0.5.

So the proportion of bolts that meet the specifications is 97%.

Step-by-step explanation:

First of all determine the z- scores of these points.There are 10% of bolts with a strength less than 18.3 kN and this normally distributed you can use chart or calculator to calculate z-score. As i have 5% then z-score is -1.28.Then check the other 19.76kN then find that it has a z-score of 1.64.

To check the difference subtract 19.76 and 18.3 then you get 1.46.

Subtract z-scores 1.64 - (-1.28) = 2.92

Then standard deviation is 1.46/2.92 = 0.50

mean of the bolts is obtained by adding 1.28 *0.5 = 0.64 to 18.3 then

subtract 1.64 *0.5 = 0.82 to 19.76

Then mean is 18.94

Mean strength is 18.94 and your standard deviation is 0.5.

For strength specification. First, we find the z-score for this value:

(18-18.94)/0.5=-1.88

the probability of a bolt being made stronger than this z-score.It is approximately 0.97.

So the proportion of bolts that meet the specifications is 97%. .

3 0
3 years ago
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