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2 years ago

An item has a listed price for $80 if sales tax rate is 3% how much is sales tax in dollars

Mathematics

1 answer:

Greeley [361]2 years ago

6 0

Answer: The sales tax would be $2.40

Step-by-step explanation:

Another way of writing any percent would be diving that percent by 100, so 3% would be 0.03 4% would be 0.04 and so forth.

All you have to do is multiply 80 by the decimal of the percent

80 * 0.03 =2.4 or $2.40

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Alexxx [7]

Answer: 55

The angles that measures 125 and y make a linear pair (equal 180)

So you just do 180-125 to get y

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1 year ago

The speed of light is 3 x 108 m/s. If its frequency is 4.11 x 104 Hz, what is its wavelength?

QveST [7]

Answer:

Wave length = speed / frequency

Wave length = 3x10^8 / 4.11x10^4

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Step-by-step explanation:

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2 years ago

A chemical flows into a storage tank at a rate of (180+3t) liters per minute, where t is the time in minutes and 0<=t<=60

Yuliya22 [10]

Answer:

The amount of the chemical flows into the tank during the firs 20 minutes is 4200 liters.

Step-by-step explanation:

Consider the provided information.

A chemical flows into a storage tank at a rate of (180+3t) liters per minute,

Let $c(t)$ is the amount of chemical in the take at <em>t </em>time.

Now find the rate of change of chemical flow during the first 20 minutes.

$\int\limits^{20}_{0} {c'(t)} \, dt =\int\limits^{20}_0 {(180+3t)} \, dt$

$\int\limits^{20}_{0} {c'(t)} \, dt =\left[180t+\dfrac{3}{2}t^2\right]^{20}_0$

$\int\limits^{20}_{0} {c'(t)} \, dt =3600+600$

$\int\limits^{20}_{0} {c'(t)} \, dt =4200$

So, the amount of the chemical flows into the tank during the firs 20 minutes is 4200 liters.

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2 years ago

Make q the subject of the formula 2(q+p)=1+5q

Semenov [28]

Answer:

Step-by-step explanation:

2q + 2p = 1 + 5q

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-3q = 1 - 2p

3q = 2p - 1

q = (2p -1)/3

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2 years ago

2.16 repeating as a mixed number and fraction

MrMuchimi

2 16/100 this would be that as a fraction. I'm a little confused as to what your asking

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2 years ago

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