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3 years ago

Mai is filling her fish tank How many gallons of water will be in the fish tank after 3 minutes?

Mathematics

1 answer:

inysia [295]3 years ago

3 0

Answer:

4.8 gallons of water.

Step-by-step explanation:

Mai is filling his fishing tank with water. This shows a proportional relation between the time and the amount of water filled.

Amount of water filled (In gallons) ∝ Duration (In minutes)

w ∝ t

w = kt ---------(1)

For t = 0.5 gallons,

Amount of water = 0.8 gallons

From equation (1),

0.8 = k(0.5)

k = 1.6

So the proportionality equation will be,

w = 1.6t

Now we have to find the amount of water filled in 3 minutes.

w = 1.6 × 3

= 4.8 gallons

Therefore, water filled in the tank after 3 minutes = 4.8 gallons.

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Answer:

1. B (40- 3n)

2.c (86)

Step-by-step explanation:

1. The shirts cost 3n. So you do 40- 3n(what the shirts cost) to find the amount of change he will recive.

2. Just plug the numbers in- 1.8(30) + 32=86.

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Answer:

The t distribution is used, because we have the standard deviation for the sample.

Step-by-step explanation:

When to use the z or the t distribution?

When we have the standard deviation for the population, we use the z distribution.

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In this question:

We have the standard deviation for the sample, which means that the t distribution is used.

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2 years ago

A window shaped like a parallelogram has an area of 18 1/3 square feet. The height of the window is 3 1/3 feet. How long us the

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2 years ago

Find the maturity value of a loan of $2500 at simple interest that is to be repaid in 8 months. The interest rate is 4. 3%. A) $

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The maturity value of a loan of $2500 at the simple interest rate of 4.3% that is needed to be repaid in 8 months is $2607.50.

<h3>What is simple interest?</h3>

Simple interest is a method of calculating interest on an amount for n period of time with a rate of interest of r. It is calculated with the help of the formula,

$SI = \dfrac{P\times R\times T}{100}$

where SI is the simple interest, P is the principal amount, R is the rate of interest, and T is the time period.

As it is given the principal amount of the loan is $2500, while the interest rate is 4.3%, therefore, after a period the interest on the loan will be,

$SI = \dfrac{P\times R\times T}{100}\\\\SI = \dfrac{2500 \times 4.3 \times 1}{100}\\\\SI =107.5$

Thus, the interest amount on the loan of $2500, is $107.5.

Now, in order to find the value of the loan we need to add the interest and the principal amount of the loan together. Therefore, the value of the loan can be written as,

The value of the loan = Principal Amount + Interest rate

= $2500 + $107.5

= $2607.50

Hence, the maturity value of a loan of $2500 at the simple interest rate of 4.3% that is needed to be repaid in 8 months is $2607.50.

Learn more about Simple Interest:

brainly.com/question/2793278

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