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Alina [70]
3 years ago
6

A cable is made up of four wires. The breaking strength of each wire is a normally distributed random variable with mean 10 kN a

nd standard deviation 1 kN. The strength of the cable, using the brittle wire method, is estimated to be the strength of the weakest wire multiplied by the number of wires.
Mathematics
1 answer:
Bas_tet [7]3 years ago
6 0

Answer:

a) μ =35.858KN

b) median cable strength =36.06KN

Step-by-step explanation:

Let X1, X2, X3, X4 represent the strength of the 4 wires.

We can find the median of the cable strength in minitab as:

Stat - Basic statistics- Display descriptive statistics-variable (C5) -statistics(median) - ok

Median cable strength is 36.06 KN

Therefore the estimate of the mean strength of the cable is 35.858 KN, and the estimate of the median cable strength is 36.06 KN.

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Pls help. 6th grade math.
alexdok [17]

Answer:

Note: If this is really sixth grade math, then im a cucumber. It's way easier than MY math, and I'm in 6th grade lol :P

Another Note: Please vote me "Brainliest", I put a lot of work into this :)

1. 40

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5. Do this yourself, it requires actually explaining and you have to use your own words. :)

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11. Sahil came up with his answer so quickly because if 45 is 10% of <em>x</em>, then obviously 30% of x would be 45 times 3 and that is 135. Due to this, he quickly new that the number of people between the ages of 30 and 49 that voted is 135 people.

That's it, please heart my answer and vote me brainliest :)

Step-by-step explanation:

Do you really need this part? I didn't do it because it would take forever LOL

7 0
3 years ago
In a fruit cocktail, for every 30 ml of orange juice you need 45 ml of apple juice and 25 ml of coconut milk. What proportion of
sveta [45]

Answer: \frac{1}{4}

Step-by-step explanation:

Given

For 30 ml of orange Juice

45 ml of apple Juice is needed and

25 ml of coconut milk is required

The proportion of coconut milk in the cocktail is

\Rightarrow \dfrac{\text{amount of coconut milk}}{\text{total volume of mixture}}\\\\\Rightarrow \dfrac{25}{30+45+25}=\dfrac{25}{100}\\\\\Rightarrow \dfrac{1}{4}

5 0
3 years ago
What is the algebraic expression for three more cookies than are in the jar
Afina-wow [57]

Answer:

x+3

Step-by-step explanation:

Since the number of cookies in the jar could be anything we'll use a variable to represent it, x.  so three more than x is what?

Well, what's thee more than 5? 8, so you add 3.

So x+3

3 0
3 years ago
Given the function h(x) = 4^x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3.
Gennadij [26K]
Ooh, fun

the average rate of change is the slope

easy, so for section A, it would be the slope from (0,h(0)) to (1,h(1)) or from (0,1) to (1,4)
slope=(y2-y1)/(x2-x1)=(4-1)/(1-0)=3/1=3


section B, would be slope from (2,h(2)) to (3,h(3)) or from
(2,16) to (3,64)
slope=(y2-y1)/(x2-x1)=(64-16)/(3-2)=48/1=48


1. section A has an average rate of change of 3
section B has an average rate of change of 48



2. 48 is how many times greater than 3
48/3=16
16 times greater

it is because it is an exponential function and the slope grows bigger
4 0
4 years ago
Read 2 more answers
Lines m and n are perpendicular. If the slope of line m is zero, then the slope of n isfind the slope of line n. If you were to
ehidna [41]
If the slope of line m was 0, then, then, in order to be perpendicular with line m, the slope of line n would be undefined because it would be a verticle line. m would be a horizontal line parallel to the x-axis, and n would be a verticle line parallel to the y-axis.
7 0
4 years ago
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