Answer:
The standard for of the equation would be 2x + 3y = 3
Step-by-step explanation:
To start, we simply need to solve for the constant.
y + 1 = 2/3(x + 3)
y + 1 = 2/3x + 2
2/3x + y + 1 = 2
2/3x + y = 1
Now we need to multiply all the numbers by the largest denominator. This will make all the numbers integers. In this case, that number would be 3.
2x + 3y = 3
Step-by-step explanation:
5x+3x=12+4
8x=16
x=16÷8
x=2
Average (mean) = (sum of all the data) / (# of data)
sum of all the data = (average)(# of data)
Thus for 100 students with an average of 93,
sum of all data = (93)(100) = 9300
and for 300 students with an average of 75,
sum of all data = (75)(300) = 22500
Therefore you would expect the overall average to be
(9300 + 22500) / (100 + 300) = 79.5 %
Now if there are x # of advanced students and y # of regular students, then
x + y = 90 (total # of students) and 93x + 75y = 87(x + y) (overall average)
The second equation can be simplified to x - 2y = 0
Subtracting the two equations yields
x = 60 and y = 90
Therefore you would need 60 advanced and 30 regular students.
Answer:
(2,2)
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
I have to do that exact same paper
