Change all mixed fractions to improper fractions.
1 2/7 = 7/7 + 2/7 = 9/7.
Subtract
9/7 - 6/7 = 3/7
3/7 is your answer
Hope this helps
<em>x</em> = liters of 1% solution
<em>y</em> = liters of 5% solution
<em />
<em>x</em> + <em>y</em> = 16
0.01<em>x</em> + 0.05<em>y</em> = 0.04*16 = 0.64
<em />
<em>y</em> = 16 - <em>x</em>
<em />
0.01<em>x</em> + 0.05(16 - <em>x</em>) = 0.64
0.01<em>x</em> + 0.8 - 0.05<em>x</em> = 0.64
0.16 = 0.04<em>x</em>
<em>x</em> = 4
<em>y</em> = 12
F(x) represents a function. If x is the number of days and she can do 225 per day, that would be multiplication to find the total 225x
With 45 extra, we must add those to the equation.
F(x) = 225x + 45
Sin125, on the unit circle, should be positive(not negative), since it should be in quadrant two if the angle 125 degrees is in standard position.
29 3/4 i am pretty sure !
