explain in your own words why (x+y)2=x2+y2.provide a numerical example to illustrate discussion rubric
1 answer:
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Answer:
(a)
$850.
(b)
$4250.
(c)
$4267.
Step-by-step explanation:
It is given that the value of a new car decreases by about 15% in the first year.
(a)
Now we are asked to find the cost of a car after one year; if we are given the initial value of car=$1000.
As the rate decreases by 15%.
that means we have to pay (100-15)% of the initial amount.
i.e. we have to pay 85% of the initial amount.
Hence the amount one has to pay= 85% of 1000.
which is equal to =85%×1000
⇒ =
Hence, the amount of car after one year when initaial amount is $1000 is:
$850.
(b)
if initial amount=$ 5000
then amount one has to pay after one year:
Hence, the amount of car after one year when initaial amount is $5000 is:
$4250.
(c)
if initial amount=$ 5020
then amount one has to pay after one year:
Hence, the amount of car after one year when initaial amount is $5020 is:
$4267.