Linear Combination3x + 2y = −44x −y = 13
1 answer:
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Answer:
69. 14 or 22π
Step-by-step explanation:
Area of a circle = 2πr
and, radius, r = 11 cm
π = 22/7
Therefore the area of a circle with radius 11cm
= 2* π * 11 or 2 * 22/7 * 11
= 22π or = 484/7
= 69. 14
Answer:
Function for given situation is :
Value of computer after 4 years = $720.3.
Step-by-step explanation:
Given that the value of a $3000 computer decreases about 30% each year. Now we need to write a function for the computers value V(t). then we need to find about how much will the computer be worth in 4 years.
It clearly says that value decreases so that means function represents decay.
For decay we use formula:
where P=initial value = $3000,
r= rate of decrease =30% = 0.30
t= number of years
A=V(t) = future value
so the required function is
or
Now plug t=4 years to get the value of computer after 4 years.
Hence final answer is $720.3.