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3 years ago

Can you guys pls help me out with 16 and 17

Mathematics

1 answer:

nlexa [21]3 years ago

8 0

Answer:

16. $ 4100

17. y = 10000 - 750x

Step-by-step explanation:

16)

As initial value is $ 5000, and salvage value is $ 500. That means in 5 years value decreased by 5000-500 = 4500 so ,

in 5 year value decreased = 4500

in 1 year value decreased = 4500/5 = 900

so per year 900 $ gets decreased from original price. So equation can be given as

V = 5000 - 900y

where V is value of a vehicle and y is number of year

So after 1 year value would be

V = 5000 - 900 x 1 = 5000 -900 = 4100 $

17)

initial cost of car = $ 10000

per year amount decreases by = $ 750

then equation can be given as

y = 10000 - 750x

where x is number of year and y is cost of car after x year.

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Answer: There are 4 male goats.

Step-by-step explanation:

We know that n of the 10 goats are male.

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For an equation:

a*x^2 + b*x + c = 0

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$x = \frac{-b +- \sqrt{b^2 - 4*a*c} }{2*a}$

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$n = \frac{1 +- \sqrt{(-1)^2 - 4*1*(-12)} }{2*1 } = \frac{1+- 7}{2}$

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n = (1 + 7)/2 = 4

This solution does make sense, this means that we have 4 male goats.

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3 years ago