48+28+20=96
128 ounces in 1 gallon
96/128= .75
So in total they all drank .75 gallons.
Answer:
An irrational number is a number that can not be written as the quotient of two integer numbers.
Then if we have:
A = a rational number
B = a irrational number.
Then we can write:
A = x/y
Then the product of A and B can be written as:
A*B = (x/y)*B
Now, let's assume that this product is a rational number, then the product can be written as the quotient between two integer numbers.
(x/y)*B = (m/n)
If we isolate B, we get:
B = (m/n)*(y/x)
We can rewrite this as:
B = (m*y)/(n*x)
Where m, n, y, and x are integer numbers, then:
m*y is an integer
n*x is an integer.
Then B can be written as the quotient of two integer numbers, but this contradicts the initial hypothesis where we assumed that B was an irrational number.
Then the product of an irrational number and a rational number different than zero is always an irrational number.
We need to add the fact that the rational number is different than zero because if:
B is an irrational number
And we multiply it by zero, we get:
B*0 = 0
Then the product of an irrational number and zero is zero, which is a rational number.
Answer:
49 students on each bus
Step-by-step explanation:
307 - 13 = 294 students
294 / 6 = 49
2x+3y=45
x+y=10
Take the bottom equation and solve for y
x+y=10
Subtract x from both sides
y=-x+10
Substitute into the top equation
2x+3(-x+10)=45
2x-3x+30=45
Subtract 30 from both sides + add like terms
-x=15
Divide both sides by -1
x=-15
Answer:-3/4
Step-by-step explanation:
Get the x by itself by dividing both sides by 8 then reduce -6/8. When you reduce you get -3/4