(20 pts, pls answer these correctly, if possible ^^;;)
2 answers:
Answer:
1. always
2.never
3.sometimes
4.always
5.sometimes
6.always
Step-by-step explanation:
It is clear from the given number line, that is a negative integer and
is a positive integer.
1. It is always true because addition is always commutative property.
2. It is never positive because product of two different sign is always negative.
3.dividing two integer with unlike sign may result in any integer
4.when a positive quantity is reduced from a negative quantity, the result is always negative.
5.division of two unlike integers may result the same,if they both have the same value
6.If an opposite of a positive integer is added to that positive integer itself, the result is is always 0.
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Answer:
90 g of water should be added and he will make 900 g of solution.
Step-by-step explanation:
Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,
810+x - 100%,
x - 10%.
Mathematically,
So 90 g of water should be added and he will make 810+90=900 g of solution.