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Ainat [17]
3 years ago
11

HELP ME WITH THIS PROBLEM

Mathematics
1 answer:
astraxan [27]3 years ago
8 0
15 because I do it like 12+3 because the 3 is negative
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The table shows the average number of hours of daylight per day for the last four months of the year. a 2-column table with 4 ro
mina [271]

The correlation coefficient for the data in the table is A. –0.993

<h3>Calculations and Parameters:</h3>

Using this formula: r = \frac{n(\sum xy)-(\sum x\sum y)}{\sqrt{n\sum x^2-(\sum x)^2}\sqrt{n\sum y^2-(\sum y)^2}}

We would use x and y to represent the unknowns.

n = 4

We have,

  • ∑x = 42,
  • ∑y = 44.37 ,
  • ∑xy = 461.3
  • ∑x^2 = 446,
  • ∑y^2 = 494

Putting these values in the formula r = \frac{n(\sum xy)-(\sum x\sum y)}{\sqrt{n\sum x^2-(\sum x)^2}\sqrt{n\sum y^2-(\sum y)^2}} would bring the answer as. A. –0.993

Read more about correlation coefficient here:

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3 years ago
1) reflection across y = x
Harlamova29_29 [7]
I’m doing this so I can ask a question
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3 years ago
you have a rope that is 129.25 inches long.you cut off 6 pieces from the rope. each piece is 18.5 inches long. how long is the r
vova2212 [387]
18.25 inches long.
129.25 - 18.5 - 18.5 - 18.5 - 18.5 - 18.5 - 18.5 = 18.25 inches
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4 years ago
In an isosceles triangle with two congruent sides, the angles across from the legs are called ________ angles.
strojnjashka [21]

Answer:

The angles across from the legs are called base angles

Step-by-step explanation:

we know that

The isosceles triangle is a triangle with two equal angles and two equal sides

The two equal sides are called legs and the third side is called base

The two equal angles are called base angles and the third angle is called vertex angle

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3 years ago
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What is the solution to this 2b+9 when b=3
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2(3)+9 is equal to 15
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3 years ago
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