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3 years ago

Solve the equation. 3.4 = –13.6 + (–3.4c) + 1.7c

Mathematics

1 answer:

cricket20 [7]3 years ago

5 0

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In an effort to determine whether any correlation exists between the price of stocks of airlines, an analyst sampled six days of

vovikov84 [41]

Answer:

Check the explanation

Step-by-step explanation:

Following table shows the calculations:

Delta, X Southwest , Y X^2 Y^2 XY

45.96 38.76 2112.3216 1502.3376 1781.4096

46.8 45.41 2190.24 2062.0681 2125.188

47.93 15.7 2297.2849 246.49 752.501

51.78 49.58 2681.1684 2458.1764 2567.2524

52.17 44.34 2721.7089 1966.0356 2313.2178

47.36 18 2242.9696 324 852.48

Total 292 211.79 14245.6934 8559.1077 10392.0488

Sample size: n =6

Now

$S_{yy}=\sum y^{2}-\frac{\left (\sum y \right )^{2}}{n}=1083.27$

$S_{xx}=\sum x^{2}-\frac{\left (\sum x \right )^{2}}{n}=35.03$

$S_{xy}=\sum xy-\frac{\left (\sum x \right )\left (\sum y \right )}{n}=84.94$

The coefficient of correlation is :

$r=\frac{S_{xy}}{\sqrt{S_{xx}S_{yy}}}=0.436$

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3 years ago

The number of significant digits in 650600000 is

kari74 [83]

6506 or 656 is the answer

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3 years ago

Use the following figure to answer the question.

Mkey [24]

Answer:

corresponding

Step-by-step explanation:

because they are in the same place on both intersections. now if u ask me doggo deserve breinliest pwease ;-;

4 0

2 years ago

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Using a video camera positioned on a table, Kat records her hanging flower basket to find out what is eating the blooms. The cam

Serga [27]

Answer: 75.5

I took the test and got it right.

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3 years ago

5th grade math. correct answer will be marked brainliest.

nordsb [41]

Answer: 60

Step-by-step explanation: that’s the first two, good luck!

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3 years ago