Answer:
3 groups of 5
Explanation:
if x is the number of groups of four, and y is the number of groups of five, then 4x +5y =39 (four students per group of four times the # of groups of four, and 5 students per group times the # of groups of five, which should equal the total amount of students, 39). also, x+y=9. (number of each type of group = 9 groups total).
then, use these two equations and solve for y, by "canceling out" x. there are many ways to do this, but i'm going to use subtraction.
4x-5y=39
x+y=9
you want to change the equation
x+y=9
into
4x+4y=36
by multiplying the whole equation by four. because in order to cancel out the x, you need it to equal zero. in the first equation, its 4x.
so its now
4x-5y =39 MINUS
4x+4y=36
___________
y=3
you can check your work because the remaining 6 groups of four (24 total students) plus the 3 groups of five (15 total students) adds up to equal 36
Yes I got something like that too when I tried to sign up for it.
Check the information you wrote for the demographic page.
Make sure everything is filled in including the social security numbers address/s etc.
Maybe you accidentally put your FAFSA ID in a parent field?
If that doesn't solve it reach back to me and I'll try to help you.
Answer:
A is is the answer it actually the right answer
Explanation:
gasoline contains water
Substituting the numbers given in the problem statement into the formula, we get ...
... dollars made by ABC Lawn Co. = 20·333 +25·444 -10 = 6660 +11100 -10 = 17750
From that effort, the lawn company makes $17,750.
_____
Perhaps you intend that the company mowed 3 lawns and raked 4 gardens. In that case the amount of money made was ...
... 20·3 +25·4 -10 = 60 +100 -10 = 150 . . . dollars
