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omeli [17]
2 years ago
11

Maria has already written 2/5 of her 1,000 word essay. If she continues writing at the same pace of 6One-half words per minute,

which expression shows the amount of time it will take her to write the rest of the essay? please i just want to know how to get 3/5
Mathematics
1 answer:
ella [17]2 years ago
7 0

Answer:

~ 92.31 minutes

Step-by-step explanation:

Given:

Length of essay = 1000

Essay already written = \frac{2}{5} of the total essay

OR

Essay already written = \frac{2}{5} \times 1000  =400\ words

Essay remaining = Length of essay - Essay already written

Essay remaining = 1000 - 400 = 600 words

i.e. \frac{3}{5} of the total essay is remaining which is actually equal to 600 words.

6.5 words are written in = 1 minute

1 word is written in = \frac{1}{6.5} minutes

600 words are written in = \frac{1}{6.5}\times 600\ minutes   = \bold{92.31}\ minutes

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According to Eurostat, 55.2% of households in Italy have one child, the highest percentage in the Euro zone. A random sample of
Sladkaya [172]

Answer:

0.04

Step-by-step explanation:

In this case we must use the following formula to be able to find the standard error, which would be the square root, of the probability for its complement divided by the population:

SE= \sqrt{\frac{p *(1-p)}{n} } \\

Now, knowing that p = 0.552 and n = 160 we replace and we are left with:

SE =  \sqrt{\frac{0.552 *(1-0.552)}{160} } \\

SE = \sqrt{0.00154}

SE = 0.039

Which means that the standard error of the proportion is 0.04

3 0
1 year ago
Identify the design of the following study. A researcher classifies students according to three parental income groups and also
Elodia [21]

Answer:

140000000

Step-by-step explanation:

6 0
1 year ago
A small country had a population of 8.4 x 10^8 in 2010. Since then, the original population has doubled, and an additional 3.7 x
Mamont248 [21]

I'm not 100% sure because it is rare to ask about adding scientific notation but I would answer it like this:

8.4x10^8 +3.7x10^9=

12.1 x 10^17

final answer

4 0
2 years ago
The selling price of a box of crackers is $1.75 You mark the crackers up to $2.54 . What is the markup percentage?
Aleks04 [339]

The markup percentage is 45.14%

Step-by-step explanation:

The given is:

  • The selling price of a box of crackers is $1.75
  • You mark the crackers up to $2.54

We need to find the markup percentage

The markup percentage = \frac{New-Old}{old} × 100%

∵ The selling price of a box of crackers is $1.75

∴ Old = 1.75

∵ You mark the crackers up to $2.54

∴ New = 2.54

- Substitute these values in the rule above

∵ The markup percentage = \frac{2.54-1.75}{1.75} × 100%

∴ The markup percentage = \frac{0.79}{1.75} × 100%

∴ The markup percentage = 0.4514 × 100%

∴ The markup percentage = 45.14%

The markup percentage is 45.14%

Learn more:

You can learn more about percentage in brainly.com/question/1834017

#LearnwithBrainly

8 0
2 years ago
Read 2 more answers
Order from least to greatest 2.8%, 7/40, 1/50, 0.044
lord [1]

Answer:

1/50 < 2.8% < 0.044 < 7/40

Step-by-step explanation:

2.8%, 7/40, 1/50, 0.044

  • 2.8% = 0.028 = 28/1000
  • 7/40 = 0.175 = 175/1000
  • 1/50 = 0.020 = 20/1000
  • 0.044 =  44/1000

<u>Ordering in ascending order</u>

  • 20/1000 < 28/1000 < 44/1000 < 175/1000

<u>Same order in original numbers</u>

  • 1/50 < 2.8% < 0.044 < 7/40
3 0
2 years ago
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