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Serhud [2]
3 years ago
14

I need help with these word problems

Mathematics
1 answer:
svp [43]3 years ago
4 0
Vhdkshdksvdfhvdfhvdghdkcvdhckdhcgxvghkv
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A used car has a value of $15,250 when it is purchased in 2012. The value of the car decreases at a rate of 7.5% per year. Write
stepan [7]
Oh this is a great question. For future reference, the formula for this would be called an exponential growth or decay function, here it Is;
Y = a( 1+r )ˣ or Y = a( 1 - r )ˣ 
the answer could be found by plugging your numbers into these equations
For example: 
Y = 15,250 ( 1 - .075)⁶ 
A value = starting value of object
R value= decimal equivalent of percent increase or decrease
x value = number of years it has been

Answer : $9552.57
4 0
4 years ago
GIVING BRAINLIEST
Likurg_2 [28]

Answer:

A) 2.25

Step-by-step explanation:

Sana nakatulong

8 0
3 years ago
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Find the surface area and volume of the figure. Round to the nearest tenth.
Debora [2.8K]

Answer: 84 mm is MAYBE the answer.

6 0
3 years ago
Find the absolute extreme of the function on the closed interval. y=9e^xsinx , [0,pi]
Molodets [167]

For convenience sake, I will let y=f(x)=9e^{x}\sin x

First, we evaluate the function at the endpoints of the interval.

f(0)=9e^{0}\sin(0)=0\\\\f(\pi)=9e^{\pi}\sin(\pi)=0

Then, we need to find the critical points.

We can start by taking the derivative using the power rule.

f'(x)=9e^{x} \frac{d}{dx} \sin x+9\sin x \frac{d}{dx} e^{x}=9e^{x}(\cos x+\sin x)

Setting this equal to 0,

9e^x (\cos x+\sin x)=0

Since 9e^x > 0, we can divide both sides by 9e^x.

\cos x+\sin x=0\\\\\sin x=-\cos x\\\\\tan x=-1\\\\x=\frac{3\pi}{4}

f\left(\frac{3\pi}{4} \right)=9e^{3\pi/4}\sin \left(\frac{3\pi}{4} \right)=\frac{9\sqrt{2}e^{3\pi/4}}{2}

So, the absolute minimum is \boxed{\left(\frac{3\pi}{4}, \frac{9\sqrt{2}e^{3\pi/4}}{\sqrt{2}} \right)} and the absolute minima are \boxed{(0,0), (\pi, 0)}

3 0
2 years ago
Write 11/9 as a decimal . if necessary use a line
gogolik [260]

Answer:

Step-by-step explanation:

1.2 divide numerator by denominator

3 0
3 years ago
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