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Zielflug [23.3K]
3 years ago
5

Emily wants to determine the relationship between the number of people in a household (x) and the last 4 digits of their phone n

umber(y) she selects 100 households in her town randomly and examined the data what is the best estimate of the correlation coefficient between x and y
Mathematics
1 answer:
ANEK [815]3 years ago
3 0

Answer:

it should be -0.5

Step-by-step explanation:

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Find the length of the unknown side.<br> 25 cm<br> 15 cm
AleksandrR [38]

Answer:

b = 20 cm.

Step-by-step explanation:

<u>Define and explain:</u>

This is a right triangle, so the Pythagorean Theorem applies.

The Pythagorean Theorem states that the sum of the squared legs will equal the squared length of the hypotenuse.

The legs of a triangle are the sides that form the right angle.

The hypotenuse is the longest side; the hypotenuse is always diagonal from the small square indicating a right angle.

<u>Solve:</u>

a^2+b^2=c^2

a,b-legs

c-hypotenuse

15^2+b^2=25^2

225+b^2=625

625-225=400

b^2=400

b=20

<u>Conclude:</u>

Therefore, the length of the unknown side is 20 centimeters.

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3 years ago
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nirvana33 [79]
Start from the right-most 7, and go one digit to the left each time:
7 - units place
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6 - hundred-thousands place
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1 - hundred-millions place
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What is the scale factor of a model car if the scale is 1 inch=2 feeet
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1 foot = 12 inches 
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3 years ago
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Answer:

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Step-by-step explanation:

The sum of ages is 8+9+10 = 27, so each year of age is rewarded by ...

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myrzilka [38]
The answer is -27/8= -3.375
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3 years ago
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