We know that:
so:
Hi Brainiac
y= 5x-9
y= 2x+6
We need to solve y=5x-9 for y
Let's start by substitute 5x-9 for y in y=2x+6
y=2x+6
5x-9=2x+6
Add -2x to both sides
5x-9-2x=2x+6-2x
3x-9=6
Now add 9
3x-9+9= 6+9
3x=15
Now divide both sides by 3 so we find the value for x
3x/3= 15/3
x= 5
Now we have x :)
We gonna find the value for y by substitute 5 for x in y=5x-9
y=5x-9
y= 5(5)-9
y=25-9
y= 16
Final answer : x= 5 and y=16
(5,16)
It was my pleasured to help you :0 Good night.
The cafeteria manager predicted number of students come for lunch at school each Friday is 280.
In Mathematics, fractions are represented as a numerical value, which defines a part of a whole. A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.
Given that, in a survey, 35 out of 75 students buy a school lunch on Fridays.
35/75
There are 600 students in the school.
Here, 600/75
= 8
Now, 35×8
= 280
Therefore, the cafeteria manager predicted number of students come for lunch at school each Friday is 280.
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