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sergiy2304 [10]
3 years ago
13

I need help with this problem

Mathematics
1 answer:
Lana71 [14]3 years ago
5 0

Hello!

To solve this, first isolate the problematic part, or .1313....

First, set .13333... equal to x. Then, find 10x. 10x = 1.333333.... Finally, find 100x. 100x = 13.33333...

Now, subtract 10x from 100 x.

100x - 10x = 13.33333... - 1.33333...

90x = 12

Now, divide both sides by 90.

x = 12/90

x = 2/15

Adding in the 1 again, you get 2/15 + 15/15, or 17/15.

Hope this helped!

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Step-by-step explanation:

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3 years ago
Bella and Heather put some money in their money boxes every week. The amount of money (y) in dollars, in their money boxes after
evablogger [386]

The question is incomplete:

Bella and Heather put some money into their money boxes every week. The amount of money (y), in dollars, in their money boxes after a certain amount of time (x), in weeks, is shown by the equations below: Bella: y = 25x + 60 Heather: y = 30x + 10 After how many weeks will Bella and Heather have the same amount of money in their money boxes, and what is that amount?

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9 weeks, $310  

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Answer:

10 weeks, $310  

Step-by-step explanation:

As the statement indicates, you have the following equations:

y=25x+60

y=30x+10

where:

y= the amount of money

x= the amount of time in weeks

You can equalize the expressions and isolate x to find the number of weeks after which Bella and Heather will have the same amount of money:

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After this, you can replace the value of x in any of the equations to find the amount of money that they will have after 10 weeks:

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According to this, the answer is 10 weeks, $310.

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Answer:

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Step-by-step explanation:

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