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ololo11 [35]
3 years ago
14

The dot plot below shows the number of days with different temperatures last month. What is the mean of the data set shown? A. 8

B. 5.13 C. 2,430 D. 81

Mathematics
2 answers:
KengaRu [80]3 years ago
8 0

Step-by-step explanation:

Below contains attachments of the complete question and the solution.

julia-pushkina [17]3 years ago
3 0

Answer:

D. 81

Step-by-step explanation:

I think the attached photo supports for your question to be answered

Here is my answer:

Number of days: 30

Mean of the data set = (68 + 70*2 +74*2 +76*4 +78 +80*5 + 82*3 +84*5 + 88 +88*3 + 92*3) /30 = 81

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A line with slope 3 passes through the point (0,10). What is the y-coordinate of the point on the line with x-coordinate 2?
lana [24]
Hello!

So to find the y-coordinate we need an equation for the line. The equation we can use is

y = mx + b

In this we already know m(the slope which is 3) and we can find b by plugging in the points that are given.

10 = 3(0) + b
10 = 0 + b
10 = b

So now that we've found b, we can use this in our equation

y = 4x + b

So now we can plug in the x-coordinate that we know (2) and find the y - coordinate.

y = 4(2) + 10
y = 8 + 10
y = 18

18 is your y-coordinate 
4 0
3 years ago
Sally bought a car for 35000 in 2017. If the car loses 5.5% semiannually, what will the value of the value of the car be at the
kumpel [21]
The value of the year at the end of 2025 will be given by:
A=P(1+r/100)^n
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p=35000
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A=35000(1+5.5/100)^16
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5 0
3 years ago
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Answer:

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4 0
3 years ago
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A TV that usually sells for $192.74 is on sale for 25% off. If sales tax on the TV is 5%, what is the price of the TV, including
Mashutka [201]

Answer:

Step-by-step explanation:

If you are saving 25%, you are still paying 75%, right?  So the cost of the TV with a discount of 25% is 192.74(.75) which is $144.56

That's the cost of the TV on sale.  Now we need to find the sales tax amount, if the sales tax is .05 as a decimal.  We are paying $144.56 for the TV, which is 100% of the cost.  On top of that, we are paying another 5%.  So altogether, for the TV, we are paying 105% of the TV.  Therefore,

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3 years ago
Last one............
Akimi4 [234]
Figure out slope by using:
(y2-y1)/(x2-x1)

Plug in values:
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