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3 years ago

12÷8×7+36÷2-9^2= find it cause I'm bored

Mathematics

2 answers:

Mamont248 [21]3 years ago

7 0

Answer:

-52.5

Step-by-step explanation:

professor190 [17]3 years ago

6 0

Answer:

-52.5

Step-by-step explanation:

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You are really excited to have found a Puch Maxi Moped from the mid Eighties, and the spring weather is making you want to get o

AlexFokin [52]

Answer:

<u>We should add 1.2 fluid ounces of oil </u>

Correct statement and question:

You are really excited to have found a Puch Maxi Moped from the mid Eighties, and the spring weather is making you want to get out and ride it around. It doesn't run on straight gasoline, you have to mix the oil and gas together in a specific ratio of 2.4 fl. oz. of oil for every gallon of gasoline. You have 2 quarts of gas. How much oil should you add?

Source:

https://www.chegg.com/homework-help/questions-and-answers/really-excited-found-puch-maxi-moped-mid-eighties-spring-weather-making-want-get-ride-arou-q38287224

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Ratio = 2.4 fl. oz. of oil for every gallon of gasoline

Amount of gas you have = 2 quarts

2. How much oil should you add?

Let's recall that 1 liquid gallon = 4 liquid quarts, therefore:

Ratio = 2.4 fluid ounces of oil for every 4 quarts of gasoline

Replacing the with the real amount of gas we have:

Ratio = 1.2 fluid ounces of oil for every 2 quarts of gasoline )dividing by 2 the oil amount and the gas amount)

<u>We should add 1.2 fluid ounces of oil </u>

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3 years ago

Are negative fractions always to the right of zero?

Tasya [4]

Answer:

no because negatives are to the left and positives are to the right

6 0

3 years ago

CAN SOME ONE PLEASE HELP WITH THIS

bearhunter [10]

Answer:

Answer d

⚡️

Step-by-step explanation:

Plzzzzzzz give 5 stars

4 0

3 years ago

Read 2 more answers

A full-time employee who works 40 hours per week earns $22.50 per hour. Estimate that person's income. Round 52 weeks to 50 week

Shkiper50 [21]

23*40=920
920*50= 46,000

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3 years ago

Read 2 more answers

The accompanying frequency distribution represents the square footage of a random sample of 500 houses that are owner occupied y

ioda

Answer:

$\bar X = \frac{\sum x_i f_i}{n} = \frac{1220750}{500}=2441.5$

$s^2= \frac{3408029125 -\frac{(1220750)^2}{500}}{500-1} =856849.7$

$s= \sqrt{856849.7}=925.662$

Step-by-step explanation:

For this case we can create the following table

Interval Frequency (f) Midpoint(xi) xi *f xi^2* f

0-499 9 249.5 2245.5 560252.3

500-999 13 749.5 9743.5 7302753

1000-1499 33 1249.5 41233.5 51521258.25

1500-1999 115 1749.5 201193.5 361986278.8

2000-2499 125 2249.5 281187.5 632531281.3

2500-2999 81 2749.5 222709.5 612339770.3

3000-3499 47 3249.5 152726.5 496284761.8

3500-3999 45 3749.5 168727.5 632643761.3

4000-4499 22 4249.5 93489 397281505.5

4500-4999 10 4749.5 47495 225577502.5

Total 500 1220750 3408029125

$\sum f_i = 500 , \sum x_i f_i = 1220750, \sum x^2_i f_i = 3408029125$

For this case we can calculate the sample mean with this formula:

$\bar X = \frac{\sum x_i f_i}{n} = \frac{1220750}{500}=2441.5$

And for the sample variance we can use the following formula:

$s^2= \frac{\sum x^2_i f_i - \frac{(\sum x_i f_i)^2}{n}}{n-1}$

And if we replace we got:

$s^2= \frac{3408029125 -\frac{(1220750)^2}{500}}{500-1} =856849.7$

And the deviation is just the square root of the sample variance and for this case is:

$s= \sqrt{856849.7}=925.662$

4 0

3 years ago