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lana [24]
1 year ago
8

graph each system of equations to find its solution. then, prove that the caution is true In a check by substituting it into bot

h equations. be sure to show all work

Mathematics
1 answer:
Lerok [7]1 year ago
4 0

The solution to a system of linear equations is the point at which the lines representing the linear equations intersect, let's graph to determine the solution:

As we can see on the graph, the lines intersect on (5, 2). Now, let's check substituing into the equations:

\begin{gathered} \text{Subtituing y=2, into the first equation:} \\ 2=x-3 \\ x=2+3 \\ x=5 \end{gathered}

So, the solution is correct.

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Help! Anyone can you explain?
erik [133]
Answer: 9/55

P(1st = red and 2nd = blue)

= (3/11) x (6/10)

= 18/110

= 9/55

To find the probability of something happening,

= (number of desired outcomes) / (total number of outcomes)

If you are finding the probability of more than one thing happening at the same time, you multiply the probability of both things happening together
6 0
2 years ago
Read 2 more answers
7. The claim that started this investigation was that students majoring in engineering are more likely to be in the marching ban
Genrish500 [490]

Answer:

See explanation below.

P(M|E) > P(M|O)

Step-by-step explanation:

Notation

First we need to define the following events:

E = The student is in a major of enginnering

O= The student is in a major different from enfinnering

M= The student is in the marching band

Solution for the problem

For this case we can calculate the following probability:

P(M|E) =\frac{P(M and E)}{P(E)}

And that represent the following event: "Given a randomly selected student is an engineering major, what is the probability  the student is in the marching band"

And the probability that need to calculate to compare is this one:

P(M|O) =\frac{P(M and O)}{P(O)}

And that represent the following event: "Given a randomly selected student is NOT an engineering major, what is the probability  the student is in the marching band"

And if the claim is satisfied we need to see this:

P(M|E) > P(M|O)

8 0
3 years ago
Mary wants to join a gym.
Leya [2.2K]

Answer:

It would take five months for the total cost of the gyms to be equal.

Step-by-step explanation:

5 0
2 years ago
X + 3= 8x -11
lapo4ka [179]

The answer is x=2

explanation:

2+3=5

8 times 2 is 16, minus 11=5

PLEASE MARK AS BRAINLIEST :)

6 0
2 years ago
Solve for x.<br> Worth 20 pts.
Vinvika [58]
You’d set up a proportion. I did 25/15=7x-40/18.
Then you would cross multiply to get 15(7x-40)=450
Distribute the 15.
105x-600=450
Add 600 to both sides, so the -600 cancels out.
Then you’re left with 105x=1050
Divide both sides by 105 and you get x=10
6 0
3 years ago
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