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3 years ago

Mike bought an MP3 player for $150. The sales tax rate was 8 percent . How much sales tax did he pay on the MP3 player?

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

7 0

He payed a total of 12.00 tax on the mp3 player

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meteroloogist track severe stoms using Doppler radar. A polar grid is used to measure distances as the storms progress. If the c

FinnZ [79.3K]

Answer:

$(x-h)^2+(y-k)^2= (r+ 40 )^2$

Step-by-step explanation:

It is given that a meteorologist is using a Doppler radar to find out the distance of the storm as it passes using a polar grid.

The origin of the radar screen is its center.

And the distance between each ring is 10 miles from the center.

So let :

r = radius

h and k = be the coordinates of the center.

So the equation of a circle is :

$(x-h)^2+(y-k)^2= r^2$

Now the equation of the fourth circle when the radius changes by 10 miles is :

$(x-h)^2+(y-k)^2= (r+ 40 )^2$

5 0

3 years ago

Can anyone explain this to me? I don’t get it

Mama L [17]

Answer:

Sin x = 0.56976744186

Step-by-step explanation:

Sin x = 4.9/8.6

8 0

3 years ago

The sum of a rational number and a irrational number

Zanzabum

Answer:

positive number

Step-by-step explanation:

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5 0

2 years ago

A study is done on the population of a certain fish species in a lake. Suppose that the population size P(1) after years is give

Andre45 [30]

Answer:

Growth
22%

Step-by-step explanation:

Given function:

$P(t) = 400(1.22)^{t}$

Initial population size is when t = 0

P(0) = 400(1.22)⁰ = 400(1) = 400

The multiple of 1.22 is applied every year, so the ratio of change is:

1.22 = 122% = 100% + 22%

This is an exponential growth which represents 22% annual growth.

5 0

3 years ago

If a club consists of 11 members, how many different arrangements of president, vice-president, and secretary are possible?

lozanna [386]

Answer: 990

Step-by-step explanation:

Because the club has 11 members, there are 11 ways to choose the president.

Because 1 person is now the president, there are only 10 people left who are candidates for vice-president. Therefore, there are only 10 ways to choose the vice-president.

Because 1 person is president and another is vice-president, out of those 11 members, there are now only 9 people who can be candidates for secretary. Therefore, there are 9 ways to choose the secretary.

Multiply the ways to choose a president, vice-president, and secretary out of 11 club members, and you get:

11 * 10 * 9 = 990 (ways)

3 0

3 years ago