Hello,
y=2x+5
==========
(y-5)=2(x-0)
Answer:
-4
Step-by-step explanation:
Point slope form: y - y = m (x - x)
5 - (-3) = m (-2 - 0)
5 + 3 = m (-2)
8 = m (-2)
m = 8/(-2)
m=4
Answer:
Hello, i think that your answer would be c
Step-by-step explanation:
Let x be the amount (the volume in milliliters) of the 5% solution to be mixed.
Then the volume of the 1% solution is 100-x milliliters.
Then your "concentration" equation is
%280.01%2A%28100-x%29+%2B+0.05%2Ax%29%2F100 = 0.02,
or, equivalently,
100-x + 5*x = 200,
which implies
4x = 100 ----> x = 100%2Fx = 25.
Answer: 25 milliliters of the 5% solution must be mised with 100-25 = 75 milliliters of the 1% solution.
If it is to match 3+1 which is 4 the value to satisfy X is -1
