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dangina [55]
3 years ago
10

Mr. Sloan said that his car was worth $30,000 when he first purchased it however over the last three years it has decreased in v

alue $5400 what integer represents the average decrease in value per year?
Mathematics
1 answer:
lyudmila [28]3 years ago
8 0

Answer:

Average decrease in car's value per year = 1800$

Explanation:

  The worth of car bought by Mr. Solan = 30000$

  Reduction of car's price = 5400$

  Number of years considered for measuring reduction of car's price = 3 years.

  Average of values = Total of the values/ Number of values.

  Average reduction per year = Total reduction/ Number of years.

                                                 = 5400/3 = 1800$

  So average decrease in car's value per year = 1800$

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Help me with these questions
Elena L [17]

Answer: a = 4, b = 163,422

<u>Step-by-step explanation:</u>

P = P_{0} e^{kt}   P is the new population, P₀ is the initial population, k is the growth rate, t is the time elapsed.

Part a) What do we know?

P = 7003

P₀ = unknown

k = .21 <em>(converted 21% into a decimal)</em>

t = 36 yrs <em>(2006 - 1970) </em>

P = P_{0} e^{kt}   <em>need to solve for P₀</em>

7003 = P_{0} e^{(.21)(36)}

7003 = P_{0} e^{7.56}

7003 = P₀ (1920)

\frac{7003}{1920} = P_{0}

3.6 = P₀

rounded to the nearest whole number = 4

Part b) What do we know?

P = unknown

P₀ = 7003

k = .21 <em>(converted 21% into a decimal)</em>

t = 15 yrs <em>(2021 - 2006) </em>

P = P_{0} e^{kt}   <em>need to solve for P₀</em>

P = 7003 e^{(.21)(15)}

P = 7003 e^{3.15}

P = 7003(23.33)

P = 163,422.46

rounded to the nearest whole number = 163,422

*************************************************************

Answer: 2, -1

<u>Step-by-step explanation:</u>

eˣ² = eˣ * e²

eˣ² = eˣ⁺²

x² = x + 2

x² - x - 2 = 0

(x - 2)(x + 1) = 0

x - 2 = 0      or      x + 1 = 0

 x = 2          or         x = -1

Check both answer for validity:

eˣ² = eˣ⁺²

e⁴ = e⁴     or   e¹ = e¹

TRUE             TRUE

*****************************************

Answer: 0 = ln 1

<u>Step-by-step explanation:</u>

e^{-10} = \frac{1}{e^{10}}

ln(e^{-10}) = ln(\frac{1}{e^{10}})

-10 = ln 1 - 10   <em>log rules say division is subtraction</em>

 0 = ln 1



5 0
3 years ago
A computer store buys a computer system at a cost of 474.60 ​$. The selling price was first at 791 ​, but then the store adverti
GalinKa [24]
So the question is the original price was $791 and they bought it at the marked down price at $474.60? then they saved $316.40 but i’m not really sure if that’s the question lol
5 0
3 years ago
Find the areas of the shapes​
likoan [24]

Answer:

both shape together equals 234

Step-by-step explanation:

trapezoid= 14+10/2*4=34

rectangle=10*20=200

8 0
3 years ago
!!! PLEASE HELP ME !!!
andrew11 [14]

Answer:

Be an GH

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Solve for B - PLEASE HELP IMMA DIE
Marta_Voda [28]
First, you would have to add d to both sides to get rid of it
x+d=ab+c/b
Then you would multiply b by both sides to get rid of the b in the denominator
x+d(b)=ab+c
After that, you would subtract c from both sides
x+d(b)-c=ab
Then you would divide both sides by a
x+d(b)-c=b
------------
      a

6 0
3 years ago
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