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mezya [45]
3 years ago
6

How do variables help you model real-world situations? Give an example of a model that uses variables and explain how it helps p

eople make predictions.
Mathematics
2 answers:
Nata [24]3 years ago
5 0
<span>How I use Variables is when i get my pay i get paid 7.50 a hour and work 40 hours a week x=40 Hope this helps =^)

</span>
olga2289 [7]3 years ago
4 0
An example would be the order of the ladder.

You are given 4x-2y=12 and -4x-9=54. You are asked to find the order of the ladder. However, you did not specify which variable represents the ladder. I will just solve for both of the variables. I will be applying the substitution method.

Let 4x-2y=12 equals equation one and equation 2 for -4x-9=54.

 

4x-2y=12

4x=12+2y

x=3+1/2y

 

substitute this x to the equation 2

-4x-9y=54

-4(3+1/2y )-9y=54

Y=-6

X=3+1/2y = 3+1/2(-6) = 3+(-3) = 0

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1/2 log2x=3log23 rewrite with out using logarithmic
Brums [2.3K]

Answer:

729

Step-by-step explanation:

\frac{1}{2}log_{2}x=3log_{2}3 \\

log_{2}\sqrt{x} =log_{2}3^{3}

\sqrt{x} =27 \\

x=27²=729

7 0
3 years ago
Emma put $35,000 in an education
elena-14-01-66 [18.8K]
A = ( 1 +r/n)^nth
or something, use .0585
6 0
3 years ago
A single fair die is rolled. What if event A stays the same, i.e., A={2,4} but B={2,4,5}. Event A is independent with event B. T
den301095 [7]

Answer:

False.

Event A and event B are not independent.

Step-by-step explanation:

We know that event A and event B are

A= {2,4} and B= {2,4,5}.

If the following condition satisfies then event A and event B are independent:

P( A and B)= P(A)*P(B).

Now A and B=?

A and B=A∩B= {2,4} ∩ {2,4,5}

A and B=A∩B={2,4}

The single fair die results in 6 outcomes so, the sample space will contain 6 elements.

Thus,

P(A∩B)=2/6=1/3

P(A)=2/6=1/3

P(B)=3/6=1/2

P(A)*P(B)=1/3*1/2=1/6

As,

P(A∩B)≠P(A)*P(B)

1/3≠1/6

Thus, events A and event B are dependent.

5 0
3 years ago
What kind of room has no doors or windows?
barxatty [35]

Answer:

kklfkfhujnvhjnhiehiejnei

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help! 5/20, will give brainliest. I do not tolerate spam answers!
notka56 [123]

This one can be factored.

9x^2-81=9(x^2-9)

3 0
3 years ago
Read 2 more answers
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