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love history [14]
3 years ago
13

I don’t know how to do this

Mathematics
1 answer:
lina2011 [118]3 years ago
3 0
What is the question you need help on?
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A set of n = 5 pairs of x and y values has ssx = 10, ssy = 40 and sp = 10. for these data, the pearson correlation is
Juli2301 [7.4K]

r = correlation coefficient

r = \frac{Sxy}{\sqrt{Sxx * Syy}}

If: Sxx = 10, Syy = 40, Sxy = 10, then:

r = \frac{10}{\sqrt{10 * 40}} \\\\ = \frac{10}{\sqrt{400}}  \\\\ = \frac{10}{20} \\\\ = \frac{1}{2}

5 0
3 years ago
N = 5(m² + D)<br> Solve for D
ipn [44]

Answer:

D = n/5 - m^2

Step-by-step explanation:

work:

n = 5(m^2 + D)

distribute the 5

n = 5m^2 + 5D

move the 5 to the other side by subtracting from both sides

n - 5m^2 = 5D

Divide both sides by 5 to isolate D

n/5 -m^2 = D

use reflexive property to get the answer on the left side

D = n/5 - m^2

7 0
4 years ago
Read 2 more answers
If a=14 and b=4, then what does ab equal?​
ryzh [129]

Answer:

ab=56

Step-by-step explanation:

14 x 4 = 56

4 0
3 years ago
Read 2 more answers
PLEASEEEE HELPPP MEEE WITHHH THISS QUESTIONN PLEASEEE!!!!<br> I NEED A GREAT EXPLANATION PLEASEE!!!!
ipn [44]

The diagonal of a rhombus divides it into two congruent isosceles triangles.

So ∠CBD ≅ ∠CDB

∠CBD + ∠CDB + 68 = 180

2∠CBD = 180 - 68 = 112

∠CBD = 56

We also have

∠BDE + ∠E + ∠DBE = 180

∠DBE = 180 - 73 - 36 = 71

∠EBC = ∠EBD - ∠CBD = 71 - 56 = 15

Answer: ∠EBC = 15 degrees

4 0
3 years ago
Multiply the fractions. Select the answer that is in simplest form.
monitta

Answer:

1 is factors of this question

7 0
3 years ago
Read 2 more answers
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