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Eddi Din [679]
3 years ago
13

If the regular price is $28 and the sales price is $21, what is the percent of the discount

Mathematics
2 answers:
ad-work [718]3 years ago
6 0
So the answer is seven cause u mines twenty eight and twenty one and the answer is seven
lorasvet [3.4K]3 years ago
5 0

Answer:

25%

Step-by-step explanation:

The price dropped by $7, because $28-$21=$7.

7/28 is 1/4. 1/4 in a percentage is 25%, because 1/4=25/100

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The two angles given are vertical angles which mean they are the same.

x +40 = 60

Subtract 40 from both sides:

x = 20

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3 years ago
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The number of people in a car that crosses a certain bridge is represented by the random variable X, which has a mean value μX =
Alona [7]

Let Y be the total amount of money paid by any given set of passengers. If there are X passengers in a car, then the driver must pay a toll of Y=0.5X+3.

Then Y has first moment (equal to the mean)

E[Y]=E[0.5X+3]=0.5E[X]+3E[1]=0.5\mu_X+3=\boxed{4.35}

and second moment

E[Y^2]=E[0.25X^2+3X+9]=0.25E[X^2]+3E[X]+9E[1]=0.25E[X^2]+3\mu_X+9

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3 0
3 years ago
Someone please help i don’t understand
WITCHER [35]

Answer:

Your answers for the row #6 are (going from left to right) 7, 8, 9, 10, 11, 12

Step-by-step explanation:

Explanation-If you look at each column, you can see that if you take the top number on any row by its side number, you just add the two.

Take the number one on the left side and add it to the number one on the top column. 1 + 1=2. So therefore, that is why there is a 2 in the answer box. 1 + 2=3, which is the next answer. It's like a pattern. Just take the number on the side and add it to the top letter until you get to the end of the row.

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valentina_108 [34]

Answer:

The answer is 48in

Step-by-step explanation:

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Aneli [31]

Answer:

14

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