When you take any polynomial and subtract any other polynomial from it you always get a third polynomial that is the closure property
Answer:
.
Step-by-step explanation:
The given equation is

Using distributive property, we get



Isolate variable terms.


Divide both sides by -0.35.



Therefore,
.
<u>Given:</u>
Ratio of white and blue paint is 2:3
Total quantity of paint is 20 litres
<u>To find:</u>
Quantity of blue paint to be mixed so that the ratio of white paint to blue paint becomes 1:7
<u>Solution:</u>
The ratio 2:3 totals 20 that is 
So, the quantity of white paint in the mixture is
and the quantity of blue paint in the mixture is 
Now, to get the final ratio as 1:7, Mary should have
of blue paint. So, she need to add
.
Therefore, Mary has to add 44 litres of blue paint to the mixture to make the ratio as 1:7.
Answer:
x=50
Step-by-step explanation:
This is a vertical angle, so the angle on top and the bottom are equal
[2(x+10)]=3x-30
2(x+10)=3x-30
2x+20=3x-30
50=x