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ella [17]
3 years ago
11

Identify whether the variable in the information below is qualitative or quantitative. Government agencies carefully monitor wat

er quality and its effect on wetlands (Reference: Environment Protection Agency Wetland Report EPA 832-R-93-005). Of particular concern is the concentration of nitrogen in water draining from fertilized lands. Too much nitrogen can kill fish and wildlife. Twenty-eight samples of water were taken at random from a lake. The nitrogen concentration (milligrams of nitrogen per liter of water) was determined for each sample.
Mathematics
1 answer:
Len [333]3 years ago
8 0

Answer: quantitative

Step-by-step explanation:

Measured variables in statistics may be subdivided into quantitative or Qualitative variables depending on whether the variable in question is numeric or non-numeric. Variables which are designed to evaluate on the basis of Number or quantity may be termed as quantitative variables while those which measure attribute and are used for characterization are called Qualitative variables. In the scenario above, the variable is concerned with the determination of concentration of nitrogen draining into water bodies, concentration follows that numeric calculations be Made in other to determine the amount of nitrogen in milligram per Litre in a particular water body in other to prevent its effect on wildlife which could result from excessive concentration in water bodies.

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What percent of 72 is 48 with step by step process
Sedaia [141]

Answer:

67%

Step-by-step explanation:

There are a few methods to finding the percent of a number.  You can use proportions:

\frac{percent}{100}=\frac{48}{72}

The 'percent' is the percent of the fraction that you are looking for, or 48/72.

Cross-multiply:  72x = (48)(100) or 72x = 4800

Divide both sides by 72:  72x/72 = 4800/72

Solve for 'x':  x = 66.6666...

Round 66.666.... to the nearest percent: 67%

8 0
3 years ago
At a birthday party there were five more girls than boys. If the ratio of girls to boys was 4 to 3,
exis [7]

Let number if boys be x

  • No of girls=x+5

ATQ

\\ \sf\longmapsto \dfrac{x+5}{x}=\dfrac{4}{3}

\\ \sf\longmapsto 3(x+5)=4x

\\ \sf\longmapsto 3x+15=4x

\\ \sf\longmapsto 4x-3x=15

\\ \sf\longmapsto x=15

<h3>Number of girls</h3>

\\ \sf\longmapsto x+5=15+5=20

3 0
3 years ago
Use the dot plot to identify the 1st Quartile, 3rd Quartile and IQR.
nignag [31]

if two mind readers read each others mind... who's mind are they reading?

4 0
3 years ago
Just do 11 or 12 or both please im really tired and it 1:34 in the morning plz help
kumpel [21]

Answer:

11)<em>(-1)</em>

<em>12)1.7</em>

Step-by-step explanation:

11)y+z/x                

 (-3)+(-2)/5

 (-5)/5

<em>    (-1)</em>

12)x-5z/y

   5+5(-2)/(-3)

   5+(-10)/(-3)

   (-5)/(-3)

   1.666

 <em>    1.7</em>

<em></em>

<em>Hope this helps you</em>

<em>If you have any question just ask me</em>

3 0
2 years ago
Scott baked a batch of rolls. He gave a bag of 10 rolls to each of 7 friends he kept 1 roll for himself. How many rolls did he b
Serjik [45]
7 times 10 is 70, so in total the friends got that amount, but we aren’t done, because we still need to add the roll that he kept for himself, so it’s 71. Notice that it didn’t say he left a whole bag for himself, just one roll.
6 0
3 years ago
Read 2 more answers
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