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Natalka [10]
3 years ago
14

What keeps galaxies togther? How?

Chemistry
1 answer:
aleksklad [387]3 years ago
8 0
Tough question, I would suggest using Google maybe, or just plain out asking your science teacher.
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At Jim's auto shop, it takes him minutes to do an oil change and minutes to do a tire change. Let be the number of oil changes h
Juli2301 [7.4K]

Answer:

The total time that Jim needs to change x oil changes and y tire changes is less than 180 min.

The time needed for x oil changes is 12 * x.

The time needed for y tire changes is 18 * y.

The total time is the sum of the above times and needs to be less than 180 that is

12 * x + 18 * y < 180 divide both sides of equation by 6

12/6 * x + 18/6*y < 180/6

2*x + 3*y < 30

2*x < 30 - 3*y divide both sides by 2 to get the inequality for x

x < 30/2 - 3/2*y = 15 - 1.5 y < 15 that is x < = 15

2*x + 3*y < 30

3*y < 30 - 2*x divide both sides by 3 to get the inequality for y

y < 30/3 - 2/3 *x = 10 - 2/3*x < 10 that is y < = 10

Also we can write x + y < x+ 3/2 * y < 15.

Explanation:

Jim's can do not more then 5 oil changes and not more then 10 tire changes or all together she can do not more then 15 total of oil and tire changes.

5 0
3 years ago
What is the bronsred base of NO2- +H2O HNO2 +OH-
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Bronsted lowry bases

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4 0
3 years ago
Help me out ! What’s the answer
Anni [7]

Answer:

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Explanation:

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2 years ago
over the last 100 years the number of lives lost during major storms like hurricanes has steadily dropped what could be conclude
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People have learnt to make shelters in a way so that they don't get affected by natural disasters that are common in their area. For example, people make houses of complete brick so they are stronger and can withstand a powerful storm
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Which statement is true at STP? (The atomic mass of Zn is 65.39 u.)
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