Listen A chemist needs to mix a 20% alcohol solution with a 60% alcohol solution to get 20
liters of a 42% alcohol solution. How many liters of the 20% solution should be
used? How many liters of the 60% solution should be used?
Use this many liters of the 20% solution:
A/
and this many liters of the 60% solution:
A

i dont know sorry

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

the answer on ed. is:

c. "the graph of f(x) has exactly two x-intercepts."

hope i could someone! : )