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SpyIntel [72]
2 years ago
9

The salt water fish tank at your house is filled with 22 inches of water. The water evaporates at a steady rate of 2 inches per

week. Write an equation that approximates the depth y of water in the aquarium x weeks after you fill it.
Mathematics
1 answer:
AysviL [449]2 years ago
8 0

Answer:

y = 22 - 2x

Step-by-step explanation:

Given the following :

Amount of water in salt water fish tank = 22 inches

Evaporation occurs steadily at the rate ; 2 inches per week

The depth y of water in the aquarium x weeks after filling :

The depth of water reduces as evaporation occurs ; and as such reduces by 2 inches per week

Hence,

After x weeks, the depth 'y' of water in the aquarium will be :

y = Initial position of water - 2(number of weeks)

y = 22 - 2x

y = new depth

x = number of weeks

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Answer:

The amount needed as a one-time deposit to earn $7,500 in 3 years is <em>$4388.17</em>

Step-by-step explanation:

<u>Basic Finance Formulas </u>

One of the most-used formulas to compute present and future values is

FV=PV(1+r)^{n}

Where FV is the future value, PV is the present value, r is the interest rate and n is the number of periods. It's vital to keep in mind that r and n must be referred to the same compounded time, e.g. r is compounded monthly and n is expressed in months

The question requires to compute the PV needed as a one-time deposit to earn a future value of $7,500 in 3 years at a 1.5% rate compounded monthly.

FV=7,500

r=1.5%=0.015

n=3*12=36 months

We converted n to months because r is compounded monthly . The formula

FV=PV(1+r)^{n}

must be managed to make PV isolated

PV=FV(1+r)^{-n}

PV=7,500(1+0.015)^{-36}

PV=\$4388.17

Answer: The amount needed as a one-time deposit to earn $7,500 in 3 years is $4388.17

3 0
2 years ago
A bicycle tire has a radius of 5 inches. To the nearest inch, how far does the tire travel when it makes 8 revolutions?
Pani-rosa [81]

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31.4 x 8 rev. = 251 inches

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A researcher is studying a group of field mice. the distribution of the weight of field mice is approximately normal with mean 2
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b

Step-by-step explanation:

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2 years ago
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goldfiish [28.3K]
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