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3 years ago

Which r-value is the best estimate of the correlation coefficient for the variables in the scatter plot?

Mathematics

1 answer:

xeze [42]3 years ago

4 0

Answer:

Step-by-step explanation:

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I need helpppp with this plssssssssssss

fiasKO [112]

Answer:

360

Step-by-step explanation:

3 0

3 years ago

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License plate in a particular state display 3 letters followed by 3 numbers how many different licenses plates can be for this s

34kurt

Answer:

What state? There is no state there

7 0

3 years ago

Earl wants to earn enough money to purchase a bike that costs $515. For every lawn he mows he earns $25 and then gets a daily bo

inysia [295]

Answer:

18 lawns

Step-by-step explanation:

Expected sum = $515

Bonus for 1 day = $15

Bonus for 5 days = $15 × 5 = $75

Amount to be earned from mowing lawns in 5 days = $515 - $75 = $440

$25 ≡ 1 lawn

$440 ≡ 440 ÷ 25 = 17.6

The minimum number of lawns is 18.

<em>(Note that we take the minimum integer greater than 17.6. If he mows 17 lawns, his earning from 17 lawns = $425 + $75 = $500)</em>

4 0

4 years ago

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The odds in favor of a horse winning a race are 9:5. find the probability that the horse will win the race.

Alexeev081 [22]

Answer:

9/14.

Step-by-step explanation:

The probability is given as a fraction or percentage.

9:5 odds in favour of a horse winning means the horse will win 9 races for every 5 it does not win.

So the probability that this horse will win is 9/(9+5)

= 9/14.

6 0

1 year ago

A farmer is tracking the number of soybeans his land is yielding each year. He finds that the function f(x) = −x2 + 20x + 100 mo

Aliun [14]

Answer:

The average rate of change = -10

The crop yield decreased by 10 pounds per acre from year 10 to year 20.

Step-by-step explanation:

A farmer is tracking the number of soybeans his land is yielding each year. He finds that the function $f(x) =-x^2 + 20x + 100$ models the crops in pounds per acre over x years.

The average rate of change can be calculated using formula

$\dfrac{f(b)-f(a)}{b-a}$

In your case,

$a=10\\ \\b=20,$

then

$f(a)=-10^2+20\cdot 10+100=-100+200+100=200\\ \\f(b)=-20^2+20\cdot 20+100=-400+400+100=100$

and the average rate of change is

$\dfrac{100-200}{20-10}=\dfrac{-100}{10}=-10$

This means the crop yield decreased by 10 pounds per acre (negative rate of change) from year 10 to year 20.

5 0

4 years ago

Read 2 more answers