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3 years ago

The sales tax in Texas is 8.25% and an item costs $400. How much is the tax?

Mathematics

1 answer:

mafiozo [28]3 years ago

6 0

Answer:

Step-by-step explanation:

400*8.25%= $33 tax

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Pls solve for each variable

Serjik [45]

$\frac{a}{8} = - 4 \\ = > a \: = - 4 \times 8 \\ = > a \: = - 32 \\$

<h3>Answer is -32.</h3>

7 0

3 years ago

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A college student earned $246, $288, $234, and $276 over a four-week period. how much must he earn during the fifth week to have

anastassius [24]

Total=255*5=1275
fifth week earning=1275-(246+288+234+276)
=231

6 0

4 years ago

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Joe bought a house for $200,000. The value of the house can be represented by the formula V = 200,0

Art [367]

The value of the home after 21 years is 200,000(1.035)^21=411,886.29

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2 years ago

The rate of change of the volume V of water in a tank with respect to time t is directly proportional to the cubed root of the v

Svetllana [295]

Answer:

The differential equation becomes -

$\frac{dV}{dt} = k\sqrt[3]{V}$ i.e. $\frac{dV}{dt} = kV^{\frac{1}{3} }$

Step-by-step explanation:

Given - The rate of change of the volume V of water in a tank with respect to time t is directly proportional to the cubed root of the volume.

To find - Write a differential equation that describes the relationship.

Proof -

Rate of change of volume V with respect to time t is represented by $\frac{dV}{dt}$

Now,

Given that,

The rate of change of the volume V of water in a tank with respect to time t is directly proportional to the cubed root of the volume.

⇒ $\frac{dV}{dt}$ ∝ $\sqrt[3]{V}$

Now,

We know that, when we have to remove the Proportionality sign , we just put a constant sign.

Let k be any constant.

So,

The differential equation becomes -

$\frac{dV}{dt} = k\sqrt[3]{V}$ i.e. $\frac{dV}{dt} = kV^{\frac{1}{3} }$

6 0

3 years ago

Goofy wants to buy white rice. The store has 4 different sizes of white rice bags: $2.00 for 1 pound, $4.25 for 2 pounds, $9.50

Tanzania [10]

Answer:

20 dollars for 12 pounds.

Step-by-step explanation:

This is a critically important question to know the answer to. It is used almost every day by good shoppers.

The trick is to get everything down to 1 pound.

$2.00

$2.00 per pound. The question is the answer.

$4.25

$4.25 / 2 pounds = $2.13 rounded.

$9.50

$9.50 / 5 = $1.90

$20

$20/12 = $1.67 rounded

8 0

3 years ago