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ale4655 [162]
3 years ago
12

What is the solution to the system of equations X+y=5 X-2y=2 (_,_)

Mathematics
1 answer:
andrew-mc [135]3 years ago
5 0
X + y = 5 => 2x + 2y = 10
                      x  - 2y =  2
                    _________(+)
                     3x        = 12 => x = 12 / 3 => x = 4 => y = 5 - 4 => y = 1
The solution to the system of equations is ( 4 , 1 ).
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The sum of two consecutive odd numbers is 284. Find each number please.
Vlad [161]
We can solve this by finding one of the numbers first
Let the smaller number be y. 
Since these 2 numbers are consecutive odd numbers, the larger number should be 2 more than the smaller one (y+2).

Therefore, 
y + (y+2) = 284
2y +2 = 284
shift +2 to the other side and turn it into -2
2y = 284 - 2
2y = 282
shift x2 to the other side and turn it into /2
y = 282/2
y = 141

Now we got the smaller number, which is 141, we can also find the larger number by adding 2 to it. 141+2 = 143, 
Therefore, your answer is 141 and 143

8 0
3 years ago
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7 0
4 years ago
You have a bag of 10 marbles. Three of them are red, five are blue, and two are green. What is the probability of randomly picki
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Answer:

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4 years ago
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