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Artist 52 [7]
3 years ago
11

Choose the algebraic expression that best represents the situation.

Mathematics
1 answer:
Igoryamba3 years ago
5 0

Answer:

524 divided by n

524 ÷ n

524/n

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So here is the answer. Normally, 10 people have 20 legs since each person has 2 legs each. But given the scenario that two people don't have legs, this would mean 20 minus 4, is 16 legs. Then one person has 3 legs, 16 plus 3 and it is 19. And then, another person has one leg, 19 plus 1 is 20. Therefore, the total legs would still be 20. Hope this helps. The dog does not count.
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For 50 randomly selected speed​ dates, attractiveness ratings by males of their female date partners​ (x) are recorded along wit
Anni [7]

This question is incomplete, the complete question is;

For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners (x) are recorded along with the attractiveness ratings by females of their male date partners (y); the ratings range from 1 to 10.

The 50 paired ratings yield x = 6.3, y = 6.0, r = -0.194, P-value = 0.176, and y^ = 7.40 - 0.218x.

Find the best predicted value of ​(attractiveness rating by female of​ male) for a date in which the attractiveness rating by the male of the female is x.

Use a significance level.

the best predicted value of y^ when x=8 is ?

( round your answer to one decimal place as needed.

Answer:

The best predicted value of y ^ when x equals 8 is 5.7

Step-by-step explanation:

From the information it is clear that equation for the regression line is

y^ = 7.40 - 0.218x.

where y^ represents the attractiveness rating by female of male partners and  x represents the attractiveness rating by male of female partners.

The predicted value of y ^  when x equals 8 is obtained by substituting the value of x with 8 in the given regression equation.

The predicted value of y^  when x equals 8 is obtained below:;

The regression equation is y^ = 7.40 - 0.218x  

Substitute x = 8x=8

y^  =7.40 − 0.218x

=7.40 − 0.218(8)

=7.40 − 1.744

= 5.656  ≃ 5.7

therefore The best predicted value of y ^ when x equals 8 is 5.7

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