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kvv77 [185]
3 years ago
12

Select the question that is different from the other three.

Mathematics
1 answer:
dlinn [17]3 years ago
3 0
yup and your going to jail :)
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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
3 years ago
For questions 1-6, let U={0,1,4,9,16,25,36,49,64,81}, A={0,9,16,36,64}, and B={1,9,25,49,81}.
sweet [91]

Answer:Q.2 Does

Step-by-step explanation:

6 0
2 years ago
Please give the actual answer if you choose to anwser
zlopas [31]

9514 1404 393

Answer:

  C. 78°

Step-by-step explanation:

The sum of angles in a triangle is 180°.

  (7x-6)° +(4x+11)° +43° = 180°

  11x +48 = 180 . . . . . divide by °, simplify

  11x = 132 . . . . . . . subtract 48

  x = 12 . . . . . . . divide by 11

Then the measure of angle T is ...

  ∠T = (7x -6)° = (7(12) -6)°

  ∠T = 78°

6 0
3 years ago
What's 1 + 1<br><br> What's 1 + 1
miskamm [114]

Answer:

the awnser would be 2

Step-by-step explantion

u have 1 apple and get 1 from a friend and that adds up to 2

4 0
2 years ago
Read 2 more answers
Expression for six minus b
Zanzabum

Answer:

6-b

Step-by-step explanation:

I hope this helps, and have a great day! :D

4 0
3 years ago
Read 2 more answers
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