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Phantasy [73]
3 years ago
9

The initial value of a car is $27,000. After one year, the value of the car is $20,250. What exponential function models the exp

ected value of the car? Estimate the value of the car after 3 years.
A. $13,824
B. $11,391
C. $16,581
D. $19,683
Mathematics
1 answer:
nasty-shy [4]3 years ago
3 0
P=20250/27000=0.75,,,y=a*b^t Y=27000(0.75)^3=11,390.625
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Graph each equation using a table. 5x + 4y = 20
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Answer:

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Step-by-step explanation:

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This is a pythagorean theorem problem therefore a^2+b^2=c^2
a=8, b=?, c=10
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the perimeter of a rectangle can be found by using the formula P=21+2w. What is the width of the rectangle if the perimeter is 1
mixas84 [53]
\begin{gathered} P=2l+2w \\ \text{If l=50 and P=100, then:} \\ 100=2(50)+2w\Rightarrow0=2w\text{ !!!!} \end{gathered}

Since this can't happen, let's suppose that P=150, then:

\begin{gathered} P=2l+2w \\ \Rightarrow150=2(50)+2w \\ \Rightarrow150=100+2w \end{gathered}

Now we have to move the 100 to the other side of the equation with a negative sign to get this:

\begin{gathered} 150=100+2w \\ \Rightarrow150-100=2w \\ \Rightarrow50=2w \end{gathered}

Finally, to get w, we move the 2 that's multiplying to the other side dividing the 50:

\begin{gathered} 50=2w \\ \Rightarrow\frac{50}{2}=w \\ \Rightarrow w=25 \end{gathered}

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What is 0.19 as a fracton
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Step-by-step explanation:

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Q26. Division A has 15 students and division B has 20 students. Average score of students in division A is greater by 2 as compa
Romashka [77]

Step-by-step explanation:

Let a be the total score of Div. A

Let b be the total score of Div. B

given,

\frac{a}{15}  -  \frac{b}{20}  = 2

as equation 1.

and

b - a = 160 \\  - a + b = 160

as equation 2.

Now multiply equation 2 by 1/20 to eliminate b to solve for a.

( - a)( \frac{1}{20} ) + (b)( \frac{1}{20} )  = ( \frac{1}{20} )(160) \\  -  \frac{a}{20}  +  \frac{b}{20}  = 8

take this new equation as equation 3.

now we will use equation 1 + equation 3 to eliminate b to solve for a.

( \frac{a}{15}  + ( -  \frac{a}{20} )) + (  - \frac{b}{20}  +  \frac{b}{20} ) = 2  +  8 \\  \frac{a}{60}  =  10 \\ a = 60 \times 10 \\  = 600

Div.A total score = 600

Average Score = Total Score / Number of students.

\frac{600}{15}  \\  = 40

3 0
3 years ago
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