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nika2105 [10]
3 years ago
5

WRITE IN ALGEBRIC EXPRESSION a) Saleem is r years old. How old will he be in 4 years?

Mathematics
1 answer:
dlinn [17]3 years ago
4 0
R+4 is the algebraic expression for your answer
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Which is NOT a major expense category?<br> housing<br> transportation<br> electricity<br> food
DIA [1.3K]
<span>Housing is definitely a major expense. Whether you rent or own it is likely to be your largest expense. Electricity and food are absolute necessities. Food is somewhat controllable depending on how often you eat out and the types of groceries you purchase. Electricity is also somewhat controllable depending on your lifestyle and how you manage consumption. However both of these categories are still going to comprise a significant portion of your monthly expenses, Transportation, on the other hand, does not have to be a major expense. If you choose not to own a car, walk or bicycle to walk, work from home, use the internet for shopping, ride share, bum rides from friends and use public transportation as a last resort this expense can be very small. However if you choose to own multiple high end cars this expense can also be quite high and greater than food or electricity. In summary, housing, food and electricity are required to survive in the modern world and will always be recurring major expense items. In contrast, it is possible to choose to minimize transportation so it is not a major expense. Now I write this as someone who owns 4 cars so the best approach is to get an education, work hard and make enough money so you don't have to worry about any of these expenses.</span>
7 0
3 years ago
Read 2 more answers
Activity A boat dealer's logo needs to be resized depending on the space available in the advertisement. You will use the GeoGeb
lesya692 [45]

Answer:

Step-by-step explanation:

Me bro

8 0
2 years ago
Student scores on exams given by a certain instructor have mean 74 and standard deviation 14. This instructor is about to give t
Lapatulllka [165]

Answer:

P(\bar X >80)=P(Z>2.143)=1-P(z

Step-by-step explanation:

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".

Let X the random variable that represent the Student scores on exams given by a certain instructor, we know that X have the following distribution:

X \sim N(\mu=74, \sigma=14)

The sampling distribution for the sample mean is given by:

\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})

The deduction is explained below we have this:

E(\bar X)= E(\sum_{i=1}^{n}\frac{x_i}{n})= \sum_{i=1}^n \frac{E(x_i)}{n}= \frac{n\mu}{n}=\mu

Var(\bar X)=Var(\sum_{i=1}^{n}\frac{x_i}{n})= \frac{1}{n^2}\sum_{i=1}^n Var(x_i)

Since the variance for each individual observation is Var(x_i)=\sigma^2 then:

Var(\bar X)=\frac{n \sigma^2}{n^2}=\frac{\sigma}{n}

And then for this special case:

\bar X \sim N(74,\frac{14}{\sqrt{25}}=2.8)

We are interested on this probability:

P(\bar X >80)

And we have already found the probability distribution for the sample mean on part a. So on this case we can use the z score formula given by:

z=\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

Applying this we have the following result:

P(\bar X >80)=P(Z>\frac{80-74}{\frac{14}{\sqrt{25}}})=P(Z>2.143)

And using the normal standard distribution, Excel or a calculator we find this:

P(Z>2.143)=1-P(z

6 0
4 years ago
GETS BRAINLIEST AND 100 POINTS!!!!!<br> FIND THE INTERVAL OF THE CONVERGENCE
harina [27]

Answer:

Look at explanation

Step-by-step explanation:

Ok,

I got...

radius of convergence = 1

interval of convergence = 3 ≤ x ≤ 5

8 0
3 years ago
What is the distance around a triangle that has measuring 2 1/8 feet,3 1/2 feet, 2 1/2 feet
N76 [4]

Perimeter: 2 1/8 + 3 1/2 + 2 1/2 = 7 (1 + 4 + 4)/8 = 7 9/8 = 8 1/8

Hope this will help you!

3 0
3 years ago
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