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AURORKA [14]
3 years ago
14

29 cm 21 cm What is the length of the missing leg? a centimeters

Mathematics
1 answer:
ladessa [460]3 years ago
4 0

Step-by-step explanation:

Use phytogoras theorem

\sqrt{ {29}^{2} }  -    \sqrt{ {21}^{2} }  \\  \\  \\  square \: root \: the \: whole \: eq \\  \\  \\  = 20cm

Hope this is correct and helpful

HAVE A GOOD DAY!

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D)) The ratio of the monthly income and expenditure of Sunayana is 5 : 3. If she
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Answer:

Sunayana's income is ₹25000 and expenditures are ₹15000.

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Let i denote the monthly income and e denote the expenditures.

We know that the ratio of the monthly income to expenditure is 5:3. So, we can write the following proportion:  

\frac{i}{e}=\frac{5}{3}

Let's multiply both sides by e. This yields:

i=\frac{5}{3}e

We know that when the income is <em>increased</em> by 5000 and the expenditures are <em>decreased </em>by 3000, the new ratio is 5:2. So, we can write the following proportion:

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Let's multiply both sides by (e-3000):

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Since we know that i=\frac{5}{3}e, substitute:

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Subtract 5000 from both sides:

-\frac{5}{6}e=-12500

Multiply both sides by -6/5. So, the expenditures are:

e=\text{Rs }15000

We can use the original ratio to find Sunayana's income:

i=\frac{5}{3}e

Substitute 15000 for e. Evaluate:

i=\frac{5}{3}(15000)=\text{Rs }25000

So, Sunayana's income is ₹25000 and expenditures are ₹15000.

And we're done!

Edit: Wrong currency, sorry about that!

3 0
3 years ago
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