New amount - original amount = amount of change
× 100 = percent of change
-----------------------------------------------------------------------------
<span>36 - 34.5 = 1.5
</span>
× 100 = 4%
It is 5% active, so if we have 10 gallons, the active ingredients would be 5% of 10.
5% of 10
= 0.05 * 10 = 0.5
0.5 gallons.
The surface area of a sphere is A = 4 π R² .
Sadly, the question doesn't give you 'R', so you have to
back it out of the circumference.
Circumference = π (diameter)
Divide each side by π : Diameter = circumference / π
Radius = 1/2 diameter: Radius = circumference / (2 π)
Area = 4 π R² =
4 π (circumference/2π)² =
4 π (circumference)² / 4 π²
Divide top and bottom by 4π : Area = (Circumference)² / π
Circumference = 37.68 units
Area = (37.68)² square units /π =
<em>451.93 square units</em>
<u>If the </u><u>data presentation</u><u> in Exercise 2 is varied by organizing the data into classes, the data presentation is called a </u><u>grouped frequency distribution </u><u>. If one class in such a distribution is 80-89, the lower class limit is 80 and the upper class limit is 89.</u>
What is the formula for grouped frequency distribution?
- A grouped frequency distribution shows the scores by grouping the observations into intervals and then lists these intervals in the frequency distribution table.
- The intervals in grouped frequency distribution are called class limits.
What is the formula for grouped frequency distribution?
- In other words, the mean for a population can be found by dividing ∑ m f by , where is the midpoint of the class and is the frequency.
- As a result, the formula μ = ∑ m f N can be written to summarize the steps used to determine the value of the mean for a set of grouped data.
Learn more about grouped frequency distribution
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<u>The complete question is - </u>
If the data presentation in Exercise 2 is varied by organizing the data into classes, the data presentation is called a ______________. If one class in such a distribution is 80-89, the lower class limit is 80 and the upper class limit is 89.