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2 years ago

A black shirt originally costs $23.00, then goes on sale for $17.25. What is the percentage discount?

Mathematics

2 answers:

Maslowich2 years ago

6 0

17.25 / 23 = 75%
100 - 75 = 25% off

Firlakuza [10]2 years ago

5 0

Answer:

5.75 was te percentage discount hope it help you

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Veronica brought her turtle out of its aquarium for 15 minutes every night for 7 days how many total minutes did she bring her t

mestny [16]

Answer: Total minutes she brought her turtle out of this aquarium = 105 minutes

Explanation :

Since we have given that

Time for which Veronica brought her turtle out of its aquarium = 15 minutes

Number of days she did so = 7

Total time in a week she did so is given by

$15\times 7 = 105\text{ minutes }$

So , Total minutes she brought her turtle out of this aquarium = 105 minutes.

4 0

2 years ago

Can you please help

Darina [25.2K]

Answer:

Step-by-step explanation:

A number that can be written as a decimal that neither repeats nor terminates.

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2 years ago

Barbara is deciding between Banquet Chefs and CeCe's Catering to cater an awards banquet. Barbara needs to choose the company th

zmey [24]

Answer:

In this scenario you should use chefs if you have less than 55 people and you should use cece's if you have more than 55 people.

Step-by-step explanation:

To find out which one will be cheaper you need to know where they intersect, to do this you need to set up a system of equations.

y=28x+590 (chefs)

y=31x+425 (cece's)

to know where they intersect you need to make the y=0

28x+590=31x+425

Then solve

subtract the x from each side

590=3x+425

Subtract 425 from each side

3x=165

divide each side by three

x=55

now evaluate

Place a number above 55 (60 for example) into the place of x

28(60)+590=2,270

31(60)+425=2,285

In this scenario you should use chefs if you have less than 55 people and you should use cece's if you have more than 55 people.

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3 years ago

Use the following information to determine your answer: The length of a movie falls on a normal distribution. About 95% of movie

Elenna [48]

Answer:

$75= 119 -1.96 \sigma$

$\sigma = \frac{75-119}{-1.96}= 22.45$

And tha's equivalent to use this formula:

$163= 119 +1.96 \sigma$

$\sigma = \frac{163-119}{1.96}= 22.45$

Step-by-step explanation:

For this case the 95%of the values are between the following two values:

(75 , 163)

And for this case we know that the variable of interest X "length of a movie" follows a normal distribution:

$X \sim N( \mu, \sigma)$

We can estimate the true mean with the following formula:

$\mu = \frac{75+163}{2}= 119$

Now we know that in the normal standard distribution we know that we have 95% of the values between 1.96 deviations from the mean. We can find the value of the deviation with this formula:

$75= 119 -1.96 \sigma$

$\sigma = \frac{75-119}{-1.96}= 22.45$

And tha's equivalent to use this formula:

$163= 119 +1.96 \sigma$

$\sigma = \frac{163-119}{1.96}= 22.45$

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2 years ago

7th grade math plss helpp

ddd [48]

Answer:

2x-2=-4

5/8x3/5= 15/40 then u simplify and get -4 3/8

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2 years ago

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