Use the depreciation formula.
Where 'p' is the principal value, 'r' is the rate it depreciates, and 'n' is the time. Just plug in what we know:
Simplify by subtracting:
Simplify the exponent:
Multiply:
Answer:
x = 3 and y = 2
x = 1.25 and y = 1.75
Step-by-step explanation:
Part 1:
See the diagram first.
If the two arrow lines are parallel then, the two triangles are similar.
So, the corresponding sides of the triangles are proportional.
So, 
Hence, x = 3 and y = 2 (Answer)
Part 2:
See the diagram first.
If the two arrow lines are parallel then, the two triangles are similar.
So, the corresponding sides of the triangles are proportional.
So, 
⇒ 
⇒ x = 1.25
Again, 
⇒ y = 1.75
Hence, x = 1.25 and y = 1.75 (Answer)
Answer:
x=1/2; x=-3
Step-by-step explanation:
2x^2+5x-3=0
(2x-1)(x+3)=0
2x-1=0; x=1/2
x=-3
Answer: 13
Step-by-step explanation:
