3 years ago

After a 20% increase an article cost $270. The original cost of the article is

Mathematics

2 answers:

aksik [14]3 years ago

8 0

$216
hope this helped!

Gekata [30.6K]3 years ago

3 0

Answer:

$216.00

Step-by-step explanation:

Final price: $216.00

Saved amount: $54.00

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Without using a calculator, what is 30% of 546? (You can round up to avoid decimal points)

madreJ [45]

Answer:

Hey there!

We can solve this by multiplying 0.3 by 546, which is about 164.

Hope this helps :)

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Colin has several bottles of water. Each bottle of water holds 3 cups. During the day, he drinks 7 cups of water. How many bottl

Natasha_Volkova [10]

Divide total cups he drank by the # of cups in each bottle.

7 ÷ 3= 2.3333

Since each bottle only holds 3 cups, he drank 3 bottles of water. He didn't drink all the water in the third bottle, but he started drinking the third bottle.

ANSWER: 3 bottles

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3 years ago

In the first round of a local tennis tournament, there are 25 matches. Find the number of matches

LiRa [457]

There are 25 matches

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The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c)

Ilya [14]

Answer:

$\bar X =\frac{2.3+3.1+2.8+1.7+0.9+4+2.1+1.2+3.6+0.2+2.4+3.2}{12}=2.29$

$s=1.09$

Step-by-step explanation:

For this case we have the following data given:

2.3 3.1 2.8

1.7 0.9 4.0

2.1 1.2 3.6

0.2 2.4 3.2

Since the data are assumedn normally distributed we can find the standard deviation with the following formula:

$\sigma =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And we need to find the mean first with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X =\frac{2.3+3.1+2.8+1.7+0.9+4+2.1+1.2+3.6+0.2+2.4+3.2}{12}=2.29$

And then we can calculate the deviation and we got:

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3 years ago

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Please help me, which of the following sets of ordered pairs is a function?

Anni [7]

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(x,y)
first numbers never repeat

first one, the x values repeat
2nd, x values rpeat
3rd, no repeat
4th, -3 repeats

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3 years ago

After a 20% increase an article cost $270. The original cost of the article is​

After a 20% increase an article cost $270. The original cost of the article is