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maxonik [38]
3 years ago
11

Write the equation of this circle in standard form.

Mathematics
1 answer:
pishuonlain [190]3 years ago
4 0

Answer:

x² + y² = 16

Step-by-step explanation:

(x-h)² + (y-k)² = r²   -- The standard form of equation of circle

(x-0)² + (y-0)² = 4²

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the number of cars at a dealership dropped from 64 to 48 after a weekend sale.what is the percent of decrease in the number. of
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Answer: This is a quite simple problem. 64 to 48. This would mean

64 - 25%

Knowing this percentage it will equal 48

<em>Answer : 25%</em>

Hope this helped!


Step-by-step explanation:


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3 years ago
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Answer:

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Step-by-step explanation:

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A powerful computer is purchased for $2000, but loses 20% of its value each year. How much will it be worth 4 years from now?
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Answer:

(A)Decay

(b)0.8

(c)First Term

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Step-by-step explanation:

The exponential function for modelling growth or decay is given as:

A(t)=A_o(1\pm r)^t,

Where:

Plus indicates growth and minus indicates decay.

A_o$ is the Initial Value\\r is the growth/decay rate\\t is the time period

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 A_o)

(d)The function for this problem is therefore:

f(t)=f_o(1- r)^t\\f(t)=2000(1- 0.2)^t\\\\f(t)=2000(0.8)^t

(e)Since we require the worth of the computer after 4 years,

t=4 years

f(4)=2000(0.8)^4\\f(4)=\$819.20

6 0
3 years ago
F(x)=−1/2(x−2)(x+6)<br><br> rewrite the function in vertex form
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Answer:

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Step-by-step explanation:

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