Pls helplinear equations

Mathematics

2 answers:

NeTakaya3 years ago

7 0

Answer:

I don’t think nobody can help you here because the picture doesn’t show up, sorry

oee [108]3 years ago

4 0

Answer:

B) y=-x+8

y=2x+5

Step-by-step explanation:

B. If you substite 1 for x and 7 for y, they both work.

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dimaraw [331]

Answer:

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Step-by-step explanation:

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Read 2 more answers

The histogram shows the speeds of downhill skiers during a competition. Estimate the mean of the data set displayed in the histo

Ostrovityanka [42]

Answer:

≈50.6

Step-by-step explanation:

Not sure what precision level this problem is looking for, but for right-skewed distributions, we know that the mean is going to be pulled right and therefore the mean should be larger than the median. To a high confidence level, the mean should fall between 50 and 59, or in the third column.

If a single estimation is wanted, assume the values inside each column are uniformly distributed:

$\displaystyle\\\widehat{\mu}=\frac{34.5\cdot 4+...+74.5\cdot 2}{4+9+4+4+2}\approx \boxed{50.6}$