13.15 ounces of 72% acid and 71.85 ounces of 25% acid are needed
<u>Step-by-step explanation:</u>
Total mass of acid required= 85 ounces
Let the mass of 72% acid be 'a'
Let the mass of 25% acid be 'b'
a + b = 85
b = 85-a
85(40/100) = a(72/100) + b(25/100)
85(2/5) = a(72/100) +(85- a) (25/100)
34 = (72a/100) + (2125/100) - (25a/100)
34 - (2125/100) = (72a + 25a) /100
(3400-2125)/100 = 97a /100
97a = 1275
a = 13.15 ounces
b = 85 - 13.14
b = 71.85 ounces
13.15 ounces of 72% acid and 71.85 ounces of 25% acid are needed
So we know the lines are parallel.
Thus, the equation should look something like this:
y = 5x + b
Now, we have to solve for b.
Plug x=1 and y=2 into the equation to solve for b
2 = 5 + b
Subtract both sides by 5
-3 = b
b = -3
Plug that value into the equation.
y = 5x - 3
That's your answer.
Have an awesome day! :)
Because it’s a horizontal it is laid flat
So coordinates that have -1 as the y value are on the same line
Ex: (6,-1), (2,-1), (7,-1) etc..
First, you know that the slope will be the same (3/2).
Plug in the points 0 for x and 7 for y in order to find b.
7=3/2*0+b
b=7
Then put the new slope and y-intercept into the equation:
y=3/2x+7
Answer:
<h3>#4</h3>
It includes all the points between those endpoints.
<h3>#5</h3>
Intersection of the planes results in line.
<h3>#6</h3>
An axiom is a statement that is so evident or well-established, that it is accepted without controversy or question