What is the perimeter (in inches) of a television screen that measures 24 1/2 in. by 40 in.?
1 answer:
The perimeter of the television screen (in inches) is 129 inches.
Given that a television screen in the shape of a rectangle has a length of 40 inches and breadth .
Perimeter of rectangle=2(length of rectangle+ bredth of rectangle)
Here the TV screen is the shape of rectangle
Therefore Perimeter of TV screen=perimeter of rectangle
Given the the length of TV screen=40 inches
The bredth of the TV screen= .
Perimeter of TV screen=2(40 inches + )
Perimeter of TV screen=(80+49) inches
Perimeter of TV screen= 129 inches
Therefore,The perimeter of the television screen (in inches) is 129 inches.
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Answer:
(A)Decay
(b)0.8
(c)First Term
(d)
(e)$819.20
Step-by-step explanation:
The exponential function for modelling growth or decay is given as:
,
Where:
Plus indicates growth and minus indicates decay.
For a powerful computer that was purchased for $2000, but loses 20% of its value each year.
(a)Since it loses value, it is a decay.
(b)Multiplier
Its value decays by 20%.
Therefore, our multiplier(1-r) =(1-20&)=1-0.2
Multiplier =0.8
(c)$2000 is our First term (or Initial Value )
(d)The function for this problem is therefore:
(e)Since we require the worth of the computer after 4 years,
t=4 years