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Elden [556K]
3 years ago
7

Some pls help to give 20 points

Mathematics
1 answer:
madreJ [45]3 years ago
4 0

Answer:

Neon= -10+10= 0 on no change

oxide=-10+8=-2

copper=-27 +29 = 2

tin= -50 +50 = 0 or no change

Step-by-step explanation:

Its basically subtraction ( i pretty sure thats right)

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Answer:

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Equation Form:

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Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

7 0
2 years ago
Suppose that Sahil knows that 45 people with the ages of 18 to 19 voted. With out using a calculator, he quickly says then 135 p
Amiraneli [1.4K]
So you are given that 45 people in the age range of 18 to 29 who voted make up 10% of the total voters.

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So, great job! :D
3 0
2 years ago
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xenn [34]
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Step-by-step explanation:

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