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pav-90 [236]
3 years ago
5

High School Mathematics 5+3 pts

Mathematics
1 answer:
quester [9]3 years ago
6 0
What is the question?
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What is the volume of a cylinder with height 4 and radius 2? Use 3.14 for pi.
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50.27

v=3.14 (2 squared) 4

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A soccer team won 30% of their games and won 40 games. how many games did they play?
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An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r =
Mamont248 [21]
<h2>The car is about 6.6 years old.</h2>

Step-by-step explanation:

Given : An equation for the depreciation of a car is given by y = A(1-r)^t, where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is 10%.

To find : Approximately how old is the car?

Solution :

The value of a car is half what it originally cost i.e. y=\frac{1}{2} A

The rate of depreciation is 10% i.e. r=10%=0.1

Substitute in the equation, y = A(1-r)^t

\frac{1}{2} A= A(1-0.1)^t

\frac{1}{2}= (0.9)^t

Taking log both side,

\log(\frac{1}{2})=t\log (0.9)

t=\frac{\log(\frac{1}{2})}{\log (0.9)}

t=6.57

t\approx 6.6

Therefore, the car is about 6.6 years old.

3 0
3 years ago
Read 2 more answers
25 POINTS!!! Simplify 3x - 4 - 5x = 6 + 4x + 2
Maksim231197 [3]
3x-5x-4x=6+2+4
-6x=12
x=-2

Hope this can help.
6 0
3 years ago
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