When famke charges her phone, it gains 222 percentage points each minute. when famke uses her phone, it loses 555 percentage points each minute. once, famke used her phone for some time, and then charged it for twice the amount of time she used it. in the end, her phone lost 101010 percentage points. how long did famke use her phone and how long did she charge it?

 Famke uses her phone for 10 minutes and she charge it for 20 minutes .

Step-by-step explanation:

Let x be the number of hours Famke charges her phone.

Let y be the number of hours Famke uses her phone.

According to question, he charged it for twice the amount of time she used it.

So, it becomes

Number of points he gain while charging her phone = 2%

Number of points he loses while used her phone = 5%

Total points he lost = 10%

So, our equation would be

Put the value of x in the eq(2).

and x=2×10=20 minutes

Hence, Famke uses her phone for 10 minutes and she charge it for 20 minutes.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

78.59 is the mean

step-by-step explanation: