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3 years ago

Can someone please please help me with this I’m sooo confused

Mathematics

1 answer:

nexus9112 [7]3 years ago

7 0

When it says x and y are directly related it means that x is multiplied by something to get y. To solve you divide y by x which is 840 divided by 6. Which is 140 then you multiply and solve so the y value for 5 is 700. The x value for 420 is 3 and the y value for 4 is 560.

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Each package of paper contains 100 sheets. At the beginning of the school year, each of Mr.Castillo 's 34 students brought in on

oksian1 [2.3K]

Answer:

3400

Step-by-step explanation:

Just multiply 100 by 34.

7 0

3 years ago

charlie needs to make a total of 60 deliveries this week. so far he has completed 18 of them. what percentage of his total deliv

VladimirAG [237]

18 / 60 = 0.3
Charlie has completed 30% of his deliveries

5 0

3 years ago

Type your answer in decimal form. Do not round.<br> 7 days =<br> a0 hours

ExtremeBDS [4]

It depends on the definition of day, solar day or stellar day.
Explanation: Solar day: 1 day = 24h
7 days = 168h

5 0

3 years ago

In 2010, the population of Kingsford was 8000. By 2014 the population had increased by 15% and 2/5 of the population was age 12

Anastasy [175]

<h2>Hello!</h2>

The answer is: The population age 12 or under was 3680.

If in 2010 the population of Kignsford was 8000, and by 2014 the population had increased by 15% we need to calculate the total population and then, calculate how many people was age 12 or under.

We must remember that we cannot work with percentage values, so, to make 15% a real number, we need to divide it by 100:

$15(Percentage)=\frac{15}{100}=0.15$

So,

Calculating the population by 2014, we have:

$Population_{2014}=Population_{2010}+ Population_{2010}*0.15$

Then, substituting we have:

$Population_{2014}=8000+ 8000*0.15=9200$

Now, calculating the population that was age 12 or under, knowing that it was 2/5 of the total population, we have:

$Population=TotalPopulation*\frac{2}{5}\\\\Population=9200*\frac{2}{5}=3680$

So, the population age 12 or under was 3680.

Have a nice day!

6 0

3 years ago

If the MAD for a forecast is 3.2, we can say that a. The forecast is 3.2 units too high on the average b. The forecast is 3.2 un

Rudik [331]

Answer:

The forecast is accurate within plus or minus 3.2 units

Step-by-step explanation:

Mean Absolute Deviation is a statistical measure of dispersion from forecast. It measures accuracy level of predicted forecast, by averaging the difference between absolute value of each error from forecasted value.

MAD for a forecast states that : Forecast is accurate within the expected range variation of Mean Absolute Deviation.

So : If the MAD for a forecast is 3.2, we can say that - The forecast is accurate within plus or minus 3.2 units

3 0

3 years ago