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aivan3 [116]
3 years ago
12

Please answer and fast ​

Mathematics
1 answer:
valentinak56 [21]3 years ago
3 0
18- H
19-C

Explanation:
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Scientists are monitoring a whale's weight by observing its weight change once a week, over a 4 week period. How much has the wh
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Answer:


Step-by-step explanation:

-2.2 - (-1.7) - (-0.4) = -4.2 + 0.3 = -3.9

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3 years ago
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A salesperson earns commission on the sales that she makes each month.
Evgesh-ka [11]

Answer:

$60

Step-by-step explanation:

We need to find how much commission she earns on the 8,000

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The correlation coefficient for poor health and not exercising in a group of people is 0.67. Analyze the following statement: Po
Brrunno [24]

Options:

  1. Yes; everyone who doesn't exercise is by definition unhealthy.
  2. Yes; the correlation coefficient is above 0.5, so that implies causation.
  3. No; the data doesn't suggest a causation, and many people are healthy who don't exercise.
  4. No; poor health and not exercising are completely unrelated.

The answer is the third option "No; the data doesn't suggest a causation, and many people are healthy who don't exercise." Correlation is two data set that are linked or connected together so in this case it would be a correlation because all of the data is close and connected to each other.

Hope this helps!

6 0
3 years ago
The points (−3, r)  and (2, 1) lie on a line with slope −2 . Find the missing coordinate r .
SVETLANKA909090 [29]
We can use point slope form to solve for this.

y - 1 = -2(x - 2)
Simplify.
y - 1 = -2x + 4
Add 1 to both sides.
y = -2x + 5

Now, we can input -3 for x and solve for y, or r in this case.

y = -2(-3) + 5
y = 6 + 5
y = 11

r = 11
6 0
4 years ago
The mean of 19 numbers is 17. An extra number is included and the mean increases to 23. What is the extra number?
bearhunter [10]

Answer:

Extra number = (23×20) - (19×17)

= 137

8 0
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