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8090 [49]
3 years ago
11

What is the value of x 2x+3y=45 x+y=10

Mathematics
1 answer:
Volgvan3 years ago
4 0
Assuming this is a system of equations, here is how to find x. 

2x + 3y = 45
x + y = 10 

Multiply x + y = 10 by 2 so you are able to use the elimination method.

2x + 3y = 45
2x + 2y = 20

Subtract.

y = 25

Now that we've found y, we can plug it in to find x. 

x + 25 = 10

Subtract 25 from both sides.

x = -15
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Answer:

13

Step-by-step explanation:

4+(-3)-2*(-6)

Let us start from the left

2*(-6)= 2 times 6 , where we will have a negative sign on the result as + when multiplied by - gives - (negative)

2*(-6)=-12

4+(-3)-2*(-6) = 4+(-3)-(-12)

Now we open the bracket from the left. It the sign outside the bracket is negative the sign in the bracket will be changed

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4+(-3)-(-12)= 4-3+12

Now -3 +12 we find the difference as the signs are opposite and then place the sign with the larger number

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3 years ago
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Answer:

D

Step-by-step explanation:

We know that both numbers are not the same distance from 0. So the first answer is incorrect.

We also know that both numbers do not equal each other. So the second answer is incorrect.

-2 and 1/2 is not more than -1 and 1/2 because we know that the larger a negative number, the lower it's value. So the third answer is incorrect.

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I hope this helps! :)

3 0
3 years ago
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ohaa [14]

Answer:

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Answer:

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Explanation: The distributive property tells us when there's a number outside a set of parenthses, you can multiply it times each of the terms that are inside the set of parenthses and then add those products together.

So in this problem, we can multiply 5(4) + 5(8)

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3 years ago
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