Answer:
<em>The fraction of the beads that are red is</em>
Step-by-step explanation:
<u>Algebraic Expressions</u>
A bag contains red (r), yellow (y), and blue (b) beads. We are given the following ratios:
r:y = 2:3
y:b = 5:4
We are required to find r:s, where s is the total of beads in the bag, or
s = r + y + b
Thus, we need to calculate:
![\displaystyle \frac{r}{r+y+b} \qquad\qquad [1]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7Br%2By%2Bb%7D%20%20%20%20%20%20%20%5Cqquad%5Cqquad%20%20%20%20%5B1%5D)
Knowing that:
![\displaystyle \frac{r}{y}=\frac{2}{3} \qquad\qquad [2]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7By%7D%3D%5Cfrac%7B2%7D%7B3%7D%20%20%20%20%20%20%5Cqquad%5Cqquad%20%20%20%20%5B2%5D)
![\displaystyle \frac{y}{b}=\frac{5}{4}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7By%7D%7Bb%7D%3D%5Cfrac%7B5%7D%7B4%7D)
Multiplying the equations above:
![\displaystyle \frac{r}{y}\frac{y}{b}=\frac{2}{3}\frac{5}{4}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7By%7D%5Cfrac%7By%7D%7Bb%7D%3D%5Cfrac%7B2%7D%7B3%7D%5Cfrac%7B5%7D%7B4%7D)
Simplifying:
![\displaystyle \frac{r}{b}=\frac{5}{6} \qquad\qquad [3]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7Bb%7D%3D%5Cfrac%7B5%7D%7B6%7D%20%20%20%20%20%20%20%5Cqquad%5Cqquad%20%20%20%20%5B3%5D)
Dividing [1] by r:
![\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+y/r+b/r}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7Br%2By%2Bb%7D%3D%5Cdisplaystyle%20%5Cfrac%7B1%7D%7B1%2By%2Fr%2Bb%2Fr%7D)
Substituting from [2] and [3]:
![\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+3/2+6/5}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7Br%2By%2Bb%7D%3D%5Cdisplaystyle%20%5Cfrac%7B1%7D%7B1%2B3%2F2%2B6%2F5%7D)
Operating:
![\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{\frac{10+3*5+6*2}{10}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7Br%2By%2Bb%7D%3D%5Cdisplaystyle%20%5Cfrac%7B1%7D%7B%5Cfrac%7B10%2B3%2A5%2B6%2A2%7D%7B10%7D%7D)
![\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{10+15+12}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7Br%2By%2Bb%7D%3D%5Cdisplaystyle%20%5Cfrac%7B10%7D%7B10%2B15%2B12%7D)
![\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{37}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Br%7D%7Br%2By%2Bb%7D%3D%5Cdisplaystyle%20%5Cfrac%7B10%7D%7B37%7D)
The fraction of the beads that are red is ![\mathbf{\frac{10}{37}}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cfrac%7B10%7D%7B37%7D%7D)
Answer:
−(3x−2)(7x+4)
Step-by-step explanation:
Answer:
Line means going on upto point but line segment means limited line