Step-by-step explanation:
Well in general, we can represent subtraction as: 
"z" represents the difference, and it really just represents x with y taken away. So if we were to "give back" this y value, we should get "x".
This means that: 
So one way to check, is adding the value that's being subtracted (y value) and the difference (z value), this should get you the value that is being subtracted from (x value). If you don't get the original value that's being subtracted from (x-value) then you know the answer you got is wrong.
39 I think sry if I’m wrong
the answer is going to be 450. all you have to do is add 375+20%
Answer:
Step-by-step explanation:
(x-5)(x+6) / (x-3) less than or equal to 0
multiply both sides by x-3
(x-5)(x+6) less than or equal to (x-3)
Foil
x^2 + 6x -5x -30 less than or equal to x-3
simplify
x^2 + x -30 less than or equal to x-3
Add 30 to both sides and subtract x from oth sides
x^2 less than or equal 27
take a square root of both sides
x less than or equal to
Answer:
40 students have given their speeches
24 students need to give their speeches
5/8 of the students have given their speeches
3/8 of the students need to give their speeches
Step-by-step explanation:
