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horrorfan [7]
3 years ago
11

The country of Sylvania has decided to reduce the number of its illiterate citizens by

Mathematics
2 answers:
kumpel [21]3 years ago
7 0

Question: The country of Sylvania has decided to reduce the number of its illiterate citizens by

are 3/5 illiterate people in the country.

each year. This year there are 9000 illiterate people in the country. Write a function that gives the number of illiterate people Sylvania, P(t), t years from today. P(t)=

Answer: 9000(2/5)^t

Levart [38]3 years ago
4 0

Answer:

9000*(2/5)^t

Step-by-step explanation:

It would not work easily for me the other way, so I rewrote it how Khan accepts it lol

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Dani's estimate for the cost of tiling her bathroom floor is $50 plus $3 per square foot. She says that she can model the cost w
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Yes I think she is because y = f(x) = a + bx.

All you need for a linear function is one independent variable and one dependent variable, and you have that.

Hope this helps, sorry if not, have a good day. c;

8 0
3 years ago
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Jenna has bought a new hybrid car. Each week for a period of seven weeks, she has noted the fuel efficiency (in miles per gallon
Leviafan [203]

Answer: 0.82 miles per gallon

Step-by-step explanation:

Given : Jenna has bought a new hybrid car. Each week for a period of seven weeks, she has noted the fuel efficiency (x) (in miles per gallon) of her car.

The results are :45 44 43 44 45 44 43

The formula to find the standard deviation is given by :-

\sigma=\sqrt{\dfrac{\sum_{i=1}^n(x_i-\overline{x})^2}{n-1}}

First we find mean of the given data ,

\overline{x}=\dfrac{\sum^n_{i=1}x_i}{n}\\\\=\dfrac{45+44+43+44+45+44+43}{7}=\dfrac{308}{7}=44

Now,

{\sum_{i=1}^n(x_i-\overline{x})^2=(1)^2+(0)^2+(-1)^2+(0)^2+(1)^2+(0)^2+(-1)^2

=1+1+1+1=4

Now,  standard deviation of the above results will be :-

\sigma=\sqrt{\dfrac{4}{7-1}}\\\\=\sqrt{\dfrac{4}{6}}\\\\=\dfrac{2}{\sqrt{3}}=0.816496580928\approx0.82

Hence, the standard deviation of these results = 0.82 miles per gallon

8 0
4 years ago
Lisa and 3 of her friends want to share 3 apples equally. write an expression to show what fraction of the apples each person sh
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1/3 is your answer

2/6 and 3/9 are equivalent

4 0
3 years ago
mary covered her kitchen floor with 10 tiles.The floor measures 6 ft long by 5 ft wide.the tiles are each 3 ft long and w ft wid
Vadim26 [7]
W=(10/(6/3))/5=(10/(2))/5=(5)/5=1

w=1 foot
8 0
4 years ago
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