Answer:
The amount of money A pays is 
Step-by-step explanation:
Let
x-----> amount of money A pays
y-----> amount of money B pays
we know that
------> equation A

so
------> equation B
substitute equation B in equation A and solve for x

Answer:
7pi/9
Step-by-step explanation:
140 degrees * (pi/180 degrees) = 7pi/9
Answer:
Decimal Form:
4.99873244
Step-by-step explanation:
geometry is the worst. but i have a way to remember how to find the area. (Apple Pies are too --> A=πr^2 --> area = pie×radius^squared) so basically you sub in 78.5 in for area and then you solve for r.
Hope i helped kinda lol
Answer:
The value of car after n years at the depreciation rate is $ 50,000
.
Step-by-step explanation:
Given as :
The cost of the car that Jill bought = $ 50,000
The depreciation rate of car value = r = 10 % a years
Let The car after n years of depreciation = $ A
Now, According to question
The cost of car after n years of depreciation = initial cost of car × 
Or, $ A = $50,000 × 
Or, $ A = $50,000 × 
Or, $ A = $50,000 × 
I.e $ A = $50,000 × 
So, value of car after n years = $ 50,000 
Hence The value of car after n years at the depreciation rate is $ 50,000
. Answer