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lora16 [44]
2 years ago
5

PLEASE HELP ME FOR A TEST AND SELECT ALL THAT APPLY!!!!!!! 5 STARS!!!!!!!

Mathematics
1 answer:
MAVERICK [17]2 years ago
5 0

Answer: 9-2 & -2-(-9)

Correct me if I'm wrong.

Step-by-step explanation:

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Javier had $1.30. He wants to split the money between himself and nine friends. Which equation shows how he could divide the mon
Reil [10]
B because it u and 9 friends each want the same amount from splitting 1.30 which gives you .13
3 0
3 years ago
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The distribution of a sample of the outside diameters of PVC pipes approximates a normal distribution. The mean is 14.0 inches,
lakkis [162]

Answer:

A. 13.9 and 14.1 inches

See explanation below.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the outside diameters of a population, and for this case we know the distribution for X is given by:

X \sim N(14,0.1)  

Where \mu=14 and \sigma=0.1

If we want the middle 68% of the data we need to have on the tails 16% on each one

For this part we want to find a value a, such that we satisfy this condition:

P(X>a)=0.84   (a)

P(X   (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.16 of the area on the left and 0.84 of the area on the right it's z=-0.994. On this case P(Z<-0.994)=0.16 and P(z>-0.994)=0.84

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=-0.994

And if we solve for a we got

a=14 -0.994*0.1=13.9

And since the distribution is symmetrical for the upper limit we can use z = 0.994 and we have:

z=0.994

And if we solve for a we got

a=14 +0.994*0.1=14.1

So the correct answer for this case would be:

A. 13.9 and 14.1 inches

3 0
3 years ago
This is the last time its happened twice please i need the answer
slamgirl [31]

Answer:

I think the answer is F hope its right fingers crossed!

Step-by-step explanation:

3 0
2 years ago
Determine the value of K that would make this expression a perfect square
Mumz [18]

Answer: k=9/4

Step-by-step explanation: We can do this by finding a number that adds up to 3 when multiplied by 2. The best way to do this is to use ((b^2)/4) which can usually find you the number for a perfect square based on b, which we have. So, 3^2 / 4 =9/4, meaning k=9/4. We can check:

>x^2 +3x +9/4

> (x+3/2)(x+3/2)

Perfect square.

4 0
3 years ago
The largest of 2 integers is one more than three times the smaller. If the sum of the two integers is 37, find the larger intege
Ber [7]

Answer:The larger is 28, the smaller is 9.

Step-by-step explanation:

n = the smaller

3n + 1 = the larger

n + (3n + 1) = 37

4n + 1 = 37

4n = 36

n = 9

3n + 1 = 3(9) + 1 = 28

The larger is 28, the smaller is 9.

mark brainliest please

7 0
1 year ago
Read 2 more answers
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