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viva [34]
3 years ago
13

An initial amount of 250 grows at a rate of 10% every year. Write an

Mathematics
1 answer:
Bingel [31]3 years ago
7 0

Answer:

10% of 250 = 25.

When getting an increase, (using ^ for this example) add 25 to 250, getting 275. That's one increase of 10%. For an increase of 5 years (x = 5) divide 250/10=25, then multiply 25x5=125. That is the increase number. Add 125+250=375. Y=375

X = 5, Y = 375

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H + 86.43 = 531.79<br><br> h = ___________
dedylja [7]
H= 445.36
because you bring the 86.43 over to the 531.79. which would make 86.43 a negative number. so you subtract 531.79 by 86.43
6 0
2 years ago
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Can anybody help me im super close to failing math
Lady bird [3.3K]

Answer:

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Step-by-step explanation:

-3 1/8 - 2 1/2 is the same as -3 1/2 + -2 1/2

4 0
3 years ago
The weight of a package of mints is believed to be normally distributed with mean 21.37 grams and standard deviation 0.4, i.e. X
nasty-shy [4]

Answer:

P(21

And using a calculator, excel or the normal standard table we have that:

P(-1.85

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

X \sim N(21.37,0.4)  

Where \mu=21.37 and \sigma=0.4

Since the distribution for X is normal then we know that the distribution for the sample mean \bar X is given by:

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

We can find the probability required with the following z score formula:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}&#10;

And replacing we got:

P(21

And using a calculator, excel or the normal standard table we have that:

P(-1.85

6 0
3 years ago
9=90,8=72,7=56,6=42,3=?
Nat2105 [25]
9(10)=90

8(9)=72

7(8)=56

6(7)=42

5(6)=30

4(5)=20

3(4)=12

3=12
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3 years ago
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I need help on 11 and 12.
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I need help with this please respond rn
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