Answer:
y = 4x + 1
Step-by-step explanation:
y = mx + b
The line goes thru (0, 1) and (1, 5)
The slope = m = (5 - 1)/ 1 - 0) = 4/1 = 4
The y-intercept is (0, 1), so b = 1
y = 4x + 1 is the equation of the line
If 2 boxes contain a blue plate, then it would be a probability of 2:30 because you have 30 boxes of unknown amount of plates with only 2 boxes with one blue plate in it.
You can only make one triangle because every triangle has 180 degrees so if you add these you get exactly 180 degrees for one triangle
Answer:
I think it may be a rectangular prism
Step-by-step explanation:
it looks like one
hope it helped
Answer:
The amount of salt required is 0.3685 grams.
Step-by-step explanation:
20.9% of 1 gram of salt is chlorine, which means the grams of chlorine in 1 gram of salt are
![\dfrac{20.9\%}{100\%} *1\: gram = 0.209g\: \text{chlorine}](https://tex.z-dn.net/?f=%5Cdfrac%7B20.9%5C%25%7D%7B100%5C%25%7D%20%2A1%5C%3A%20gram%20%3D%200.209g%5C%3A%20%5Ctext%7Bchlorine%7D)
Now, to make 220 ppm solution, it must be that
![\dfrac{220}{10^6} = \dfrac{y}{350+y},](https://tex.z-dn.net/?f=%5Cdfrac%7B220%7D%7B10%5E6%7D%20%3D%20%5Cdfrac%7By%7D%7B350%2By%7D%2C)
where
is the grams of chlorine required.
We rearrange the equation and solve for ![y:](https://tex.z-dn.net/?f=y%3A)
![220(350+y) = 10^6y](https://tex.z-dn.net/?f=220%28350%2By%29%20%3D%2010%5E6y)
![77000+220y =10^6y](https://tex.z-dn.net/?f=77000%2B220y%20%3D10%5E6y)
![77000 = (10^6-220)y](https://tex.z-dn.net/?f=77000%20%3D%20%2810%5E6-220%29y)
![y = \dfrac{77000}{999780}](https://tex.z-dn.net/?f=y%20%3D%20%5Cdfrac%7B77000%7D%7B999780%7D)
![\boxed{y= 0.07702g}](https://tex.z-dn.net/?f=%5Cboxed%7By%3D%200.07702g%7D)
since 1 gram of salt has 0.209 grams of chlorine, 0.07702g of chlorine corresponds to
![\dfrac{0.07701}{0.209} = 0.3685g {\text{ of salt. }](https://tex.z-dn.net/?f=%5Cdfrac%7B0.07701%7D%7B0.209%7D%20%3D%200.3685g%20%7B%5Ctext%7B%20of%20salt.%20%7D)
Thus the amount of salt required is 0.3685 grams.