Kenna and Gracie each opened a checking account on the same day Kenna opened her account with$680and deposited $50per week from her babysitting earnings .Gracie opened her account with $950 and deposited $20 per week from her allowance model and solve an equation that can be used to find the num er of weeks it will take for their account balances to be equal

9 weeks

Step-by-step explanation:

Given

Kenna's Account

initial amount$680 and

deposited $50per week

The total amount for x number of weeks will be

y= 680+50x1

Gracie's Account

initial amount$950 and

deposited $20per week

The total amount for x number of weeks will be

y= 950+20x2

Step two:

equating the two equations above we have'

680+50x= 950+20x

solve for x

680-950=20x-50x

-270= -30x

divide both sides by -30

x= -270/-30

x=9 weeks

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.