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3 years ago

Select the correct statement about what data scientists do during the Data Preparation stage.

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

4 0

Answer:

e. All of the above statements are correct.

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Keianaka and Christopher are participating in a volunteer project painting homes for elderly people in their neighborhood. Keian

Burka [1]

The K-team can paint a whole house in 60 minutes (super fast!!!). How much of a house can the team paint in 1 minute? The K-team can paint 1/60 of a house per minute.

The C-team can paint a whole hose in 80 minutes. How much of a house can the team paint in 1 minute? The C-team can paint 1/80 of a house per minute.

Suppose both teams paint for the same amount of time -- call the time t (minutes).

Combine the work they do to paint 1 whole house:

$\frac{1}{60}t+\frac{1}{80}t=1$

Multiply all the terms by the Least Common Denominator, LCD = 240.

$240(\frac{1}{60})t+240(\frac{1}{80})t=240$

Now, can you finish it? By the way, the answer is not a whole number! Hint: it will be between 30 and 40 minutes.

8 0

4 years ago

Are you sus?

kati45 [8]

Answer:

no you your sus your the impostor

8 0

3 years ago

Read 2 more answers

Please help me with this.

xenn [34]

By solving a system of equations, we will see that you must use 6.67 pounds of chocolate-covered almonds.

<h3>How to solve the system of equations?</h3>

First, we need to define the two variables:

x = number of pounds of the $9.99 chocolate-covered almonds used.
y = number of pounds of the $5.99 chocolate-covered raisins used.

If we mix that, we will get:

x*$9.99 + y*$5.99 = (x + y)*C

That equation means that the cost of the individual elements of the mixture, must be equal to the total cost of the mixture. Where C is the cost of each pound of the mixture, and we know that:

C = $8.75

y = 3

Replacing that, we get:

x*$9.99 + 3*$5.99 = (x + 3)*$8.75

Now we can solve that for x:

x*$9.99 - x*$8.75 = 3*$8.75 - 3*$5.99

x*$1.24 = $8.28

x = $8.28/$1.24 = 6.67

Then you must use 6.67 pounds of the chocolate-covered almonds.

If you want to learn more about systems of equations:

brainly.com/question/13729904

#SPJ1

3 0

2 years ago

What is -(x + 5) distributed

KiRa [710]

Answer:

-x-5

Step-by-step explanation:

Multiply every part inside the equation by -1.

x*-1 and 5*-1

-1x+-5x

Simplify.

-x-5

3 0

3 years ago

Is (6 + 14) + 70 = transitive ?

oksian1 [2.3K]

Okay so we gotta do whats in the lines first so 6+14 that’s gonna be 20 but the add the 70 and it’s gonna be 90

7 0

3 years ago

Read 2 more answers