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marishachu [46]
3 years ago
15

What does a correlation coefficient of r = -0.89 indicate?

Mathematics
1 answer:
Leviafan [203]3 years ago
5 0

Answer:

There is a strong but negative correlation. The - cuases a doawnward line but .89 is close to 1

Step-by-step explanation:

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Which system of equations can be used to find the roots of the equation 4x^2=x^3+2x?
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Next time, please share the answer choices.
Starting from scratch, it's possible to find the roots:

<span>4x^2=x^3+2x should be rearranged in descending order by powers of x:

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Clearly, one root is 0.  We must now find the roots of (x^2 - 4x + 2):

Here we could learn a lot by graphing.  The graph of y = x^2 - 4x + 2 never touches the x-axis, which tells us that (x^2 - 4x + 2) = 0 has no real roots other than x=0.  You could also apply the quadratic formula here; if you do, you'll find that the discriminant is negative, meaning that you have two complex, unequal roots.
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3 years ago
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Answer:

C. The triangles are not similar.

Step-by-step explanation:

Divide the short sides and long sides to see if they are similar:

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torisob [31]

Angle B = 54°

Step-by-step explanation:

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In the collection of beads, StartFraction 4 Over 20 EndFraction are blue. Which model shows the percent of beads that are blue?
jolli1 [7]

Option B model shows the percent of beads that are blue.

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Fraction of beads blue = \frac{4}{20}

To convert it into percent multiply the fraction by 100.

$\text {Percent of} \ \frac{4}{20}=\frac{4}{20}\times 100\%

                     $=\frac{4\times 100}{20} \%

Cancel the common factors, we get

                    = 20%

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This means total number of boxes 100 and shaded in blue color 20.

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Answer:

B

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