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Anna35 [415]
4 years ago
9

The variables x and y vary inversely. When y is 10, x is 10. What is x when y is 20

Mathematics
1 answer:
dezoksy [38]4 years ago
8 0
<span>inversely
y = k/x
k = yx
k = 10*10 = 100

when y = 20

20 = 100/x
20x = 100
   x = 5

answer
</span><span> x = 5 when y is 20</span>
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The price of a watch was increased by 7% to £1350. What was the price before the increase? Give your answer to the nearest penny
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Answer:

1261.68

Step-by-step explanation:

1350 = the increased watch price= 107% of the original

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1261.68224299

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1261.68224299 + 88.317757 = 1349.9 = 1350

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1261.68224299  

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3 0
3 years ago
There are slips of paper that are numbered from 1 to 15 in a hat. What is the theoretical probability that a slip of paper that
lesya [120]

Okay! Let's write out all the numbers:

1

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Now, let's bold (or you can circle them... or do really anything to them as long as they are standing out to you) the even numbers (remember all even numbers are divisible by 2)

1

2

3

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5

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7

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Now let's list all the ones we highlighted:

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Count up how many numbers that is.

You should get 7.

So, our answer is 7 out of 15 numbers.

Or as a fraction:

7/15 is our answer.

Note: A probability is the number of chances something has to happen out of the total number of chances. So in this case the number of even numbers out of the total number of numbers. You can apply this to any probability problem. Hope this helps!

Read more on Brainly.com - brainly.com/question/2150566#readmore

5 0
3 years ago
Read 2 more answers
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Serggg [28]

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4 = 2 h ⋅ ( 1 M )⋅ 3 = 6 h M

you answered one of my questions before now i answer yours lol.

6 0
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tekilochka [14]

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Step-by-step explanation:

Add 1947 and 99 because he is depositing, as in adding, 99 dollars

5 0
3 years ago
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