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laila [671]
2 years ago
7

Can someone please help me find the length and width please? 10 POINTS

Mathematics
1 answer:
Ostrovityanka [42]2 years ago
4 0

Answer:

  4.4 m

Step-by-step explanation:

The scale shows you the width of the bedroom is ...

  1.2 + 2.1 + 1.1 = 4.4 . . . meters

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skis at a sports store near snow summit are on sale for $476. if the original price was $560, what discount rate does this repre
trapecia [35]
The answer would be 560-476 equals 84
8 0
3 years ago
Risk taking is an important part of investing. In order to make suitable investment decisions on behalf of their customers, port
GrogVix [38]

Answer:

a=49.5 -1.28*15=30.3

So the value of height that separates the bottom 10% of data from the top 90% is 30.3.  

If the score is lower than 30.3 we consider this score as risk averse

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 scores of a population, and for this case we know the distribution for X is given by:

X \sim N(49.5,15)  

Where \mu=49.5 and \sigma=15

We are interested in the bottom 10% of the data.

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

P(X>a)=0.9   (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 0.1 of the area on the left and 0.9 of the area on the right it's z=-1.28. On this case P(Z<-1.28)=0.1 and P(z>-1.28)=0.9

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=-1.28

And if we solve for a we got

a=49.5 -1.28*15=30.3

So the value of height that separates the bottom 10% of data from the top 90% is 30.3.  

If the score is lower than 30.3 we consider this score as risk averse

7 0
2 years ago
Anyone know? Help is appreciated! Will mark brainliest if correct!
serious [3.7K]
D. 6 is correct answer
4 0
3 years ago
Read 2 more answers
A store sells new video games for $55 each. The store also features $12 per used video game. Jacob is buying 3 new video games a
nikitadnepr [17]

Answer:

im pretty sure it would be a.

Step-by-step explanation:

55x3 = 165, and  12x would mean the money times the amount of used he bought.  so therefore it is a.

3 0
3 years ago
In 1992, jason bought a gallon of gas for $1.23. yesterday, he bought a gallon of gas for $2.19. what is the percentage increase
marishachu [46]
1992- a gallon - 1.23dollars
yesterday - 2.19 dollars

2.19dollars - 1.23 dollars = 0.96 dollars
percentage increase is (0.96 / 1.23) x 100 = 78.0%
4 0
3 years ago
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