Answer:140 over 3
Step-by-step explanation: i got that answer but i dont think its the right
Let t, f, and s be the amount of 25%, 40%, and 60% solutions used.
We are told s=3f. The general equation is:
100(0.25t+0.4f+0.6s)/(t+s+f)=45, and using s=3f we have:
(0.25t+0.4f+1.8f)/(t+4f)=0.45
(0.25t+2.2f)/(t+4f)=0.45
0.25t+2.2f=0.45t+1.8f
0.25t+0.4f=0.45t
0.4f=0.2t
t=2f, remembering that s=3f, will allow us to solve for f
t+s+f=60, using t and s from above
2f+3f+f=60
6f=60
f=10 L then
s=3f=30 L and t=2f=20L
So 20L of 25%, 10L of 40%, and 30L of 60% acid solutions need to be mixed to make 60L of 45% acid solution.
Answer:
Step-by-step explanation:
3*2t
substitute the value of t
=3*2*4
=24
When a line is given in the form
The slope of the line is m. So, in this case, the slope of is 1.
Given a slope , you find the slope of a perpendicular line by imposing
So, if the given line has slope 1, a perpendicular line has slope given by
and thus
So, we want a line with slope -1 and passing through (12,-1). Using the fomula
we get