Let f be amount of 43% and s be amount of 16%...
s+f=90, f=90-s
(.16s+.43f)/90=.25 using f found above we get:
(.16s+.43(90-s))/90=.25
.16s+38.7-.43s=22.5
-.27s=-16.2
s=60, and since f=90-s, f=30
So the chemist will need to mix 60ml of 16% solution with 30ml of 43% solution to create 90ml of a 25% solution.
You'd first change the equation to slope-intercept form.
For example:
-2x + y = 6
You'd add 2x to both sides -
-2x + y + <u>2x</u> = 6 + <u>2x </u>
y = 2x + 6
So you'd graph y = 2x + 6
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Hope this helped!
It would be 1. You add all the temperatures. Get the sum and divide it by the amount of temperatures.
16m cubed - 10m squared......
take out the common factors
they both have a two that can go into it and both have two m's you can take out
so then it becomes
2m squared(8m-5) and thats your answer (:
