Each cousin will get 0.75 cents because you would have to divide $2.25 by 3. I hope this helps.
Answer:
The range of this set of numbers is 9
Step-by-step explanation:
The range is the greatest number subtracted by the lowest number
in this problem that is 21-12
Just square to find them to buy the answer by a dividend then the fraction of the answer then you get your answer
Based on the calculations, the unknown number is equal to ![\frac{-45}{7}](https://tex.z-dn.net/?f=%5Cfrac%7B-45%7D%7B7%7D)
- Let the unknown number be x.
<h3>How to find an
unknown number:</h3>
Translate the word problem into an algebraic expression, we have;
Adding 21 to the unknown number:
![21 +x](https://tex.z-dn.net/?f=21%20%2Bx)
Multiplying the result by 3:
![3\times (21+x)](https://tex.z-dn.net/?f=3%5Ctimes%20%2821%2Bx%29)
84 more than two-thirds of the unknown number:
![\frac{2x}{3} +84](https://tex.z-dn.net/?f=%5Cfrac%7B2x%7D%7B3%7D%20%2B84)
Equating the equations, we have:
![3\times (21+x) = \frac{2x}{3} +84\\\\43+3x=\frac{2x}{3} +84](https://tex.z-dn.net/?f=3%5Ctimes%20%2821%2Bx%29%20%3D%20%5Cfrac%7B2x%7D%7B3%7D%20%2B84%5C%5C%5C%5C43%2B3x%3D%5Cfrac%7B2x%7D%7B3%7D%20%2B84)
Cross-multiplying, we have:
![43+3x=\frac{2x}{3} +84\\\\129+9x=2x+84\\\\9x-2x=84-129\\\\7x=-45\\\\x=\frac{-45}{7}](https://tex.z-dn.net/?f=43%2B3x%3D%5Cfrac%7B2x%7D%7B3%7D%20%2B84%5C%5C%5C%5C129%2B9x%3D2x%2B84%5C%5C%5C%5C9x-2x%3D84-129%5C%5C%5C%5C7x%3D-45%5C%5C%5C%5Cx%3D%5Cfrac%7B-45%7D%7B7%7D)
Read more on word problems here: brainly.com/question/13170908
Could u please name the story? The picture isn't clear enough for me to read