Answer:
$450
Step-by-step explanation:
Let E be the amount of money Ethan starts with, J be the amount Jun Wei starts with, and R be the amount Raj starts with. Let M be the total amount of money to start with.
To start:

This means Ethan has 5/20 of M, the money to start with. This reduces to 1/4 of M.
Afterwards:

This means Ethan has 3/13 of the remaining money (which is M-50!) after giving up 50. So
E = (M/4), or 4E = M
and

We know 4E = M, so we can substitute that in:

That's how much money Ethan had to start with. But we're asked how much he has AFTER giving $50 away, so that's $450.
The way I did this was determine the proofreaders’ page/hour rate. 200/6 is 33.33, while 200/9 is 22.22. 55.55 in total. 55.55/hour, combined, means that this hourly rate would need to multiply to fit in three hours. Thus, we multiply 55.55 by three, giving us 166.65. This is not two hundred, meaning you need more time, or better proofreaders.
Answer:
P (gray), P (green)
Step-by-step explanation:
i just put this in my test and got a 100 !
Answer:
<h2><u><em>The function basically returns the same objects (= does nothing). This could also be written explicitly as a named function. new Function <- function(x) { x } which would then be. cross val <- function(data, lambda=0, y trans = new Function) This is the default value, like in lambda=0, except the default value is a function itself.</em></u></h2><h2><u>
brainlist plz </u></h2>
Step-by-step explanation: