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Oliga [24]
3 years ago
15

Classify the scenarios based on whether they are observational studies, experiments, or surveys. Scenario A: Twenty employees of

a company are randomly selected and asked if they would like the company to revise the existing dress code. Scenario B: Analysts at an energy research institute compare the frequency of power outages caused by snowfall in different states over the past decade. Scenario C: To determine and compare the accuracies of pedometer X and pedometer Y, researchers randomly ask consumers to use one of the two pedometers and then analyze the results. Scenario D: At a coffee shop, ten customers are randomly selected each day and asked how many times in a week they visit the shop. which ones are obsevational study, experimental, survey
Mathematics
1 answer:
viktelen [127]3 years ago
6 0

Answer:

Just took test, got it right. In the following:

Step-by-step explanation:

Scenarios:

A- Survey

B- Observation

C- Experiment

D- Survey

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Help please
Oksanka [162]
Ok so B is 78 - 26 = x
X is your answer
8 0
3 years ago
What does (-3/4)(-4/7)(-2/3 equal to please show work!?
mestny [16]

Answer:

-2/7 0r 2/-7 or the negative sign is in the middle

Step-by-step explanation:

(-3/4)(-4/7)= 3/7

3/7 x -2/3= -2/7

5 0
3 years ago
The first four numbers hexa said were 16 32 48 and 64 if she keep counting this way what is the 99th Number hexa will say
rewona [7]

Answer:

316,912,650,057,057,350,374,175,801,344

Step-by-step explanation:

You can see that this sequence is geometric so you need to know the geometric sequence which is x_{n} =r^{n-1} and if you plug in every thing you get x_{n}=2^{99-1} which would be 2^{98} which is 316,912,650,057,057,350,374,175,801,344

6 0
4 years ago
Guess please help i’m so desperate
forsale [732]

Answer:

P(x) = x^2+24x+5

Step-by-step explanation:

<u>Functions</u>

In a function, an independent variable, let's call it x is related to a dependent variable y and it can be expressed as:

y = f(x)

Let's consider the functions given in the question, where the equation that represents a company's yearly sales is:

S(x)=2x^2+24x

And the equation that represents the same company's yearly expenses is:

E(x)=x^2-5

The company's profit function P(x) can be found as the difference between S(x) and E(x), thus:

P(x) = S(x)-E(x)=2x^2+24x-(x^2-5)

Operating:

P(x) = 2x^2+24x-x^2+5

Simplifying, the profit function for this company is:

\boxed{P(x) = x^2+24x+5}

8 0
3 years ago
Thomas invests $50,000 in an account that compounds interest continuously and earns 15%. How long will it take for his money to
WARRIOR [948]

Answer:

It will take about 7.3 years for his money to triple.

Step-by-step explanation:

Identify the variables in the formula.

A = 150,000

P = 50,000

r = 0.15

t = ?

A = Pe^rt

Substitute the values into the formula.

150,000 = 50,000e^0.15*t

Solve for t. Divide each side by 50,000.

3 = e^0.15*t

Take the natural log of each side.

ln 3 = ln e^0.15*t

Use the power property and then simplify.  

ln 3 = 0.15*t ln e

ln 3 = 0.15-t

Divide each side by 0.15.

(ln 3) /(0.15) = t

Approximate the answer.

t ≈ 7.3

4 0
3 years ago
Read 2 more answers
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