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DanielleElmas [232]

3 years ago

14

The _________________________________ is the ratio between two directly proportional quantities. Two quantities are directly pro

portional when they increase and decrease at the same rate.

1 answer:

hoa [83]3 years ago

5 0

Answer:

Constant of proportionality

Step-by-step explanation:

There is nothing to explain

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nika2105 [10]

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3 years ago

The value of a jewel in 2015 was $17500. The jewel was purchased in 2008, and its value appreciated 2.5%

ArbitrLikvidat [17]

Answer:

$14722.14

Step-by-step explanation:

We are given that

In 2015

The value of jewel=$17500

Rate of appreciation, r=2.5%

We have to find the initial value of the jewel when it was first bought.

Time, n=7 years

Final value= $Initial\;value (r/100+1)^n$

Using the formula

$17500=Initial\;value(2.5/100+1)^7$

$17500=Initial\;value(1.025)^7$

$Initial\;value=\frac{17500}{(1.025)^7}$

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5 0

3 years ago

I need help on all this

Snezhnost [94]

#2:

Find the total surface area of the capped cylinder.

2 times the area of the base would be 2[pi*(3 cm)^2, or 18pi.

The circumference of the base is C = 2pi*r, which here is 6pi.
The area of the sides is C times height, or 6pi*(11 cm) = 66pi cm^2

Add this to the 18pi cm^2 previously found.

Total area of cylinder, including top and bottom, is 84 cm^2.

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3 years ago