Find the new price for the markdown. Round to the nearest cent if necessary. $12.99 marked down 25%

1 answer:

8 0

$9.74

I like to do these equations backwards and multiply the first number by the opposite of it. ( think 1- the percent as a decimal) however, you can do this by converting the percent into a decimal and then subtracting that from the original number.

Have a great day!

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Someone Please Help!!!

Cerrena [4.2K]

Basically, r=2t
A(r)=pir^2
sub 2t for r
A(2t)=pi(2t)^2
A(2t)=4pit²

A. A=4pit²

B. t=5
A=4pi5²
A=4pi25
A=100pi
A=314 square units

8 0

3 years ago

A man jogs from his home to the nearst market 25km away jogs at an average speed 5km 1h. how long does it taken him to reach the

mr_godi [17]

Answer:

1/5

Step-by-step explanation:

first write the formula of average speed

2) then equate the values of given question
3) you will find the solution

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2 years ago

The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past

galina1969 [7]

Complete Question

The complete question is shown on the uploaded image

Answer:

1 ) The correct option B

2) The correct option is C

3) The correct option is C

4) The correct option is C

Step-by-step explanation:

From the question we are told that

The proportion that own a cell phone is $p = 0.90$

The sample size is n = 15

Generally the appropriate distribution for X is mathematically represented as

$X \ is \ B( n , p )$

$X \ is \ B( 15 , 0.90 )$

Generally the number students that own a cell phone in a simple random sample of 15 students is mathematically represented as

$\mu = n * p$

$\mu = 15 * 0.90$

$\mu = 13.5$

Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as

$\sigma = \sqrt{ n * p * q }$