If t is the amount of time she used it, then it lost t*(5/min) percentage points; then she charged it for 2t, so it gained (2t)*(2/min) =t*(4/min) percentage points.
This means that above this time period, the phone lost t*(5/min)-t*(4/min) =t*(1/min) percentage points; because this loss is recognized to be 10 percentage points, this means t*(1/min) =10, so t=10 min.
This means that she used her phone for 10 minutes and charged it for 20 minutes.
Answer:
Not necessarily words, because there is nothing hard to define in geometry, something hard to LEARN is theorems and postulates though.
Step-by-step explanation:
Hope this helps! :)
Answer:
M=1/2 and 1/4
Step-by-step explanation:
I hope this is what you are asking.
Answer:41 − 45; 46 − 50; 51 − 55; 56 − 60
Step-by-step explanation:
<span>A. When adding two rational numbers a/b and c/d, the numerators a and c do not have to be integers. Therefore, the sum does not have to be a rational number. I think this is right might nor be :/
</span>
