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N76 [4]
4 years ago
12

Two buses are moving towards each other, one at a speed of 40 mph and the other at a speed of 50 mph. How much closer to each ot

her will they be in one hour? In two hours? In three hours?
Mathematics
2 answers:
lara31 [8.8K]4 years ago
8 0
What is the starting distance
gtnhenbr [62]4 years ago
8 0
They will be closer by ten hours in the first hour, but it'll get farther by ten as hours pass by, if you need a specific answer for this, you'll need a starting distance and an arrival place and specifically a time when the trains arrive in its destination. This problem lacks details.
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6.81 is what percent of 45.5
frosja888 [35]

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 45.5 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 45.5 is 100%, so we can write it down as 45.5=100%.

4. We know, that x is 6.81% of the output value, so we can write it down as x=6.81%.

5. Now we have two simple equations:

1) 45.5=100%

2) x=6.81%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

45.5/x=100%/6.81%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.


7. Solution for what is 6.81% of 45.5


45.5/x=100/6.81

(45.5/x)*x=(100/6.81)*x       - we multiply both sides of the equation by x

45.5=14.684287812041*x       - we divide both sides of the equation by (14.684287812041) to get x

45.5/14.684287812041=x

3.09855=x

x=3.09855

now we have:

6.81% of 45.5=3.09855

Hope this helps!

4 0
3 years ago
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How to expand this logarithm?
Zarrin [17]
There is a division symbol, division is subtracted. Are you sure you have the problem stated clearly?
<span>ln( \frac{-5m-3}{ \sqrt{-4m-7} } )\\  \\ ln(-5m-3) - ln( (-4m-7)^{1/2} ) \\ \\ Power Rule  \\  \\ ln(-5m-3) -  \frac{1}{2} ln(-4m-7)

</span>
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Select all of the numbers that are prime<br> 17<br> 18<br> 19<br> 20<br> 21<br> 22<br> 23
Sveta_85 [38]
17, 19, 23. 

Remember, prime numbers are numbers that can only be divided by 1 and itself.
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Kendra was asked to find the number of students who planned to attend the evening sympothy performance. She was told that 40 per
ch4aika [34]

Answer:

It's B

Step-by-step explanation:

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if some one did 35% of their hw over 7 days if that person reads the same amount of pages each night , how many more days will i
Llana [10]

Answer:

13

Step-by-step explanation:

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