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Mandarinka [93]
3 years ago
6

I need help with these questions !

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0
What do you need help with? it helps us to know the question!
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If x + 3y = 7 and x - 3y =7 , then find y<br><br> Please help me
telo118 [61]

Answer:

x + 3y = 7 , x - 3y = 7 : y = , x = 7

Step-by-step explanation:

\left[\begin{array}{ccc}x + 3y = 7\\x - 3y = 7\end{array}\right]

Isolate x for x + 3y = 7 : x = 7 - 3y:

Substitute x = 7 - 3y:

\begin{bmatrix}7-3y-3y=7\end{bmatrix}

Isolate y for 7 - 3y - 3y = 7 : y = 0:

For x =7-3y

Substitute y = 0

x=7-3 * 0

7 - 3 * 0 = 7

x = 7

The solution to the system of equations are:

y=0,\:x=7

Hope I helped. If so, may I get brainliest and a thanks?

Thank you. Have a good day! =)

3 0
3 years ago
Find the point on the line <br> y = 2x + 3<br> that is closest to the origin.
Ludmilka [50]
I believe the answer is (-1,1) . The origin is the same as (0, 0) so I drew the line on a quick graph and if you are talking about distance, then the answer should be correct.
Hope this helped :)
6 0
3 years ago
On average, 6 traffic accidents occur every 3 months at a certain intersection.
lions [1.4K]
The answer to this question is 2/3.
3 0
3 years ago
Which of the following sequences is an arithmetic sequence?
Elza [17]

Answer:

The answer is C

Step-by-step explanation:

The only equation that you are adding n of each time. In this scenario n=3

4 0
3 years ago
SOMEONE PLEASE HELP ME WITH THIS QUESTION 2.5x - 3 = 2x - 2 <br>I don't get what x is equal to
Luda [366]

Answer:

2

Step-by-step explanation:

Use the property of equality :)

5 0
3 years ago
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