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loris [4]
2 years ago
7

A researcher carefully calculates the correlation coefficient and gets a value of r=1.23. What does this value mean?

Mathematics
1 answer:
Vaselesa [24]2 years ago
4 0
Answer: An error was made! All correlation coefficients: -1 ≤ r ≤ 1.
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What is the answer to this??
Helga [31]

Since the triangle is equilateral, all its angles are equal to 60°

AO is the bisector⇒∠OAD = 30°

AO AO is the hypotenuse, ∠OAD = 30°⇒

OD=10:2=5ft

By the Pythagorean theorem

10^2=AD^2+5^2\\AD=\sqrt{100-25} \\AD=\sqrt{75}

AC=AD+DC=2\sqrt{75}=10\sqrt{3}

S=\frac{a^2\sqrt{3} }{4}

S=\frac{(10\sqrt{3})^2\sqrt{3}  }{4} =\frac{300\sqrt{3} }{4} =75\sqrt{3} ft^2

Answer: A) S=75\sqrt{3}ft²

P.S. Hello from Russia and sorry for my bad english :^)

5 0
3 years ago
Variable y varies directly with variable x, and y = 48 when x = 8.
scZoUnD [109]
Y/x=k   48/8=6=k   k is the constant       y/4=6    y=24
3 0
2 years ago
Given m||n, find the value of x.
allsm [11]
En q puedo ayudar explícame un poco más de lo q debes hacer
8 0
3 years ago
Read 2 more answers
Find a slope of each line (each block is one unit):
Darina [25.2K]

Answer:

The slope is -3

Step-by-step explanation:

We have two points

( -1,2) and (1,-4)

We can use the slope formula

m = ( y2-y1)/(x2-x1)

   = ( -4 -2)/ ( 1 - -1)

   = ( -4-2)/ (1+1)

   = -6/2

   = -3

8 0
3 years ago
What is the distance between two points on the globe 30° north and 50° south​
wlad13 [49]

Answer:

The distance between two points on the globe 30° north and 50° south at the equator is the same as latitude, roughly 69 miles. At 45 degrees north or south, the distance between is about 49 miles (79 km). The distance between longitudes reaches zero at the poles as the lines of meridian converge at that point.

Step-by-step explanation:

Sorry If it is wrong.

3 0
2 years ago
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