CrustySandwich: you have to turn this into an equation. when x is 60, y is 25,so divide both sides by 60 to find how much radiation is lost each year. 60/25=2.4. so 2.4% of radiation is lost each year.
you have to turn this into an equation. when x is 60, y is 25,so divide both sides by 60 to find how much radiation is lost each year. 60/25=2.4. so 2.4% of radiation is lost each year.
Vraces: I don't understand what you mean by P and S.
I don't understand what you mean by P and S.
Vraces: A radioactive kalashnikov gets less radioactive every year. After 60 years only 25% of the radio-activeness remains.What is the yearly reducing of radio-activeness in percent?
A radioactive kalashnikov gets less radioactive every year. After 60 years only 25% of the radio-activeness remains.What is the yearly reducing of radio-activeness in percent?
kitty<3: x/5-4(x-5)/3=2x/3+5Well, this is sort of confusing. I'm assuming that you've put parentheses in all the places you need them(?)Then, you can start by multiplying both sides by the same number so that x is not a fraction.
x/5-4(x-5)/3=2x/3+5Well, this is sort of confusing. I'm assuming that you've put parentheses in all the places you need them(?)Then, you can start by multiplying both sides by the same number so that x is not a fraction.
mikaela: how do I set a binary?
how do I set a binary?
mcelhattan: what is 190-120=
what is 190-120=
+118741 
