First, 45 is the total number of students. So you have to add the ratio: 2+3=5. Since you are finding the number of sixth graders, you need to use the ratio 2.
Sixth graders : All = x : 45
2 : 5 = x : 45
You could change this to fractions and solve it.
2/5 = x/45
x = 18
So there are 18 sixth graders.
Step-by-step explanation:
No, the LaTeX that the app uses starts and ends with the [ tex ] and [/ tex ] tags (without the spaces). In (1), simply remove the \latex tag and the integral will appear in embedded form:
![\int_a^b f(x)\, dx](https://tex.z-dn.net/?f=%20%5Cint_a%5Eb%20f%28x%29%5C%2C%20dx)
This is meant to maintain the line spacing. If you want show the full size of the integral (or in display mode), add the \displaystyle tag after the [ tex ] like this
[ tex ]\displaystyle \int_a^b f(x)\, dx[/ tex ]
and the integral will look like this
![\displaystyle \int_a^b f(x)\, dx](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cint_a%5Eb%20f%28x%29%5C%2C%20dx)
after removing the spaces in the [tex] tag. This works also for sums and product of a series and limits.