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vekshin1
3 years ago
13

Explain how you can determine whether or not the ratios 4/2 and 8/6 and form a proportion.

Mathematics
1 answer:
expeople1 [14]3 years ago
3 0

Answer:

Not proportional.

Step-by-step explanation:

Given ratios:

\frac{4}{2}, \frac{8}{6}

To tell whether the ratios are proportional or not.

Solution:

In order to tell whether the given ratios are proportional or not, we will reduce the fractions to the simplest numbers by dividing the numerator and denominator by their greatest common factor and then comparing them. If they are equal then the ratios are proportional else not proportional.

So, the simplest form of \frac{4}{2} can be calculated by dividing both by 2 as it is the G.C.F.

\frac{4}{2}=\frac{4\div2}{2\div 2}=\frac{2}{1}

the simplest form of \frac{8}{6} can be calculated by dividing both by 2 as it is the G.C.F.

\frac{8}{6}=\frac{8\div2}{6\div 2}=\frac{4}{3}

Now, since \frac{2}{1}\neq \frac{4}{3}, hence the ratios are not proportional.

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3 years ago
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3 years ago
Read 2 more answers
HELP PLEASE!!! I NEED THIS NOWWWWW!!
Ugo [173]

Part A - linear functions change at a constant rate.. while exponential functions change at a constant percent rate... that sounds the same but it's not.  A linear function will go up (or down) the same amount when the time period is the same...  like up 1,000 more visitors every month... if this happens, when you subtract the visitors for month 10-month 9, you will get the same answer as when you subtract he visitors for month 9-month 8.  

An exponential function will go up by the same % when the time period is the same... so it'd be like if it went from 1,000 to 1,100 (that's up 100, which is 10% of 1,000) and then from 1,100 to 1,210 (that's up by 110, which is 10% of 1,100). If this happens you get the same answer when you divide the visitors for month 10 by the visitors from month 9 as you get when you divide the visitors for month 9 by the visitors from month 8.    (sometimes because of decimals you only get really really close to the same but that counts).

This one is exponential because dividing gets you around 2.09 every time

Part B

Since dividing # of visitors by the # from the month before gets you around 2.09 each time, we multiply that by 100 to get the % version of the decimal.

So that's 209%... but that's not how much it changes by or grows by... that's what it ends up.  It goes from itself (100%) to a bigger # (209%).. that's a 209-100 = 109% increase each month.



Part C

you need to think a little bit about what's going on in class.... becasue there are a bunch of different ways to do this. Sometimes you make an equation, sometimes you work backwards.


Here's one way... since multiplying visitors from week 8 by 2.09 gets you week 9 visitors.. and multipliying week 9 visitors by 2.09 gets you week 10... etc.... we can go backwards...

Week 7 visitors times 2.09 would equal the week 8 visitors

so,  w(2.09)=5.74

if we divide both sides by 2.09 we get w is equal to about 2.7464...  so the week 7 visitors is about 2.7464 (thousands) or 2,746.


Hope that helps



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3 years ago
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4 years ago
The book rack sold 24 paperbacks on Saturday, 17 of them mysteries. What percent of the books were mysteries?
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To find the percentage of something you simply divide the amounts. 17 of the 24 books were mystery so to find the percentage of mystery books you do 17 divided by 24

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and round it to 71

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3 years ago
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