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.
W = 7/15 L
w = 56
56 = 7/15 L
56 x 15/7 = 7/15 x7 L
L = 120
21x+11=21x
—-subtract 21x on both sides
11=0
—-subtract 11 on both sides
0=-11
Answer: There are no solutions
Answer:
dont use this
Step-by-step explanation:
oinf+euiv=4
Answer:
Step 1 : <u>1000</u> * 2 * 9
Step 2 : <u>1000</u> * 18
Step 3 : <u>18000</u>
Step-by-step explanation:
<u>Step 3</u>
2000 * 9 = y ⇒ 18000
y = <u>18000</u>
<u>Step 1</u>
Solving for this, we have:
Let a be the unknown variable
a * 2 * 9 = 18000
18a = 18000
a = <u>1000</u>
Therefore, when we multiply 1000 by 2 & 9, we have 18000
<u>Step 2</u>
Solving for this, we have:
Let a be the unknown variable
a * 18 = 18000
18a = 18000
a = <u>1000 </u>
Therefore, when we multiply 1000 by 18, we have 18000
<u>We therefore see that the value of the unknown variables (a, y) is shown above & the product of all the steps (step 1 - 3) is 18000</u>
