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Anna11 [10]
3 years ago
6

There is an inverse relationship between x and y. If y is when x is 3, what is x when y is 9?

Mathematics
1 answer:
maria [59]3 years ago
3 0
For example, y = k/x; when x = 3 => k = 3y; when y = 9 => k = 27  and x = 27/9 = 3;
The answer is 3!
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Help me answer the question ​
Nastasia [14]

\huge \boxed{\mathbb{QUESTION} \downarrow}

  • Revathi's age is 1/3 of her mother's age. If their difference in age is 24 years, find Revathi's age.

\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}

Given,

  • Mother's age = x
  • Revathi's age = 1/3 x = ?
  • Difference in their age = 24 years ⇨ x - 1/3 x = 24.

Now, let's solve this question using the above equation which we just formed.

\sf \: x -  \frac{1}{3}x  = 24 \\

Combine x and \sf\:-\frac{1}{3}x to get \sf\frac{2}{3}x.

\sf\frac{2}{3}x=24  \\

Multiply both sides by \sf\frac{3}{2}, the reciprocal of \sf\frac{2}{3}.

\sf \: x=24\times \left(\frac{3}{2}\right)

Express \sf24\times \left(\frac{3}{2}\right) as a single fraction.

\sf \: x=\frac{24\times 3}{2}  \\

Multiply 24 and 3 to get 72.

\sf \: x=\frac{72}{2}  \\

Divide 72 by 2 to get 36.

\boxed{ \bf \: x=36 }

We now have the age of Revathi's mother (x) = <u>36 years</u>. Now, let's find Revathi's age ⇨ \sf\:(\frac{1}{3}x)

\rightarrow \sf \:  \frac{1}{3} x  \\  \rightarrow \sf \: \frac{1}{3}  \times 36 \\  \rightarrow \sf \: \frac{1}{ \bcancel  3}  \times  \bcancel{36} \\  \rightarrow \sf \:1 \times 12 \\  =    \boxed{\boxed{\bf \: 12}}

  • So, Revathi is <em><u>1</u></em><em><u>2</u></em><em><u> </u></em><em><u>years </u></em><em><u>old.</u></em>
6 0
2 years ago
Read 2 more answers
15 POINTS I need help asp
Mashutka [201]

Answer: 90

Step-by-step explanation: if you subtract 35 from 125 you will get 90, which is your answer.

3 0
3 years ago
Can someone help me? - will mark as best brain if you help me out (//^.^//)
wariber [46]

Answer:

1- Circumference: 43.96 Area: 153.86

2- Circumference: 69.08  Area: 379.94

3- Circumference: 40.82  Area: 132.67

4- Circumference: 28.26 Area: 63.59

5- Circumference: 57.78 Area: 265.77

3 0
2 years ago
Read 2 more answers
Tommy waves 45 kg Jamil Woods 53 kg what is the combined weight of the two boys in grams?
Nikolay [14]

Answer:

109,000

Step-by-step explanation:

1kg = 1000g

45 + 63 = 109

109 x 1000 = 109000

5 0
2 years ago
-5(2b + 7) + b &lt; -b - 11
Stells [14]
<span><span>-5(2b+7) + b < -b - 11</span>
<span>-10b - 35 + b < -b - 11

- 10b + b - 35 < -b - 11

-9b - 35 < -b - 11

- 9b + b < - 11 + 35 

-8b < 24

</span></span>\frac{-8b}{-8} \ \textless \  \frac{24}{-8}
<span><span>
b < -3

Have a nice days.........</span></span>
8 0
3 years ago
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