The diameter of a circle is 4 cm. Which equation can be used to find its circumference?
2 answers:
Answer:
Step-by-step explanation:
We have been given that the diameter of a circle is 4 cm.
We know that circumference of circle is pi times the diameter of circle.
, where, D represents diameter of circle.
Upon substituting the measure of diameter in above formula we will get,
Therefore, the circumference of our given circle would be .
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<h3>Answer:</h3>
y = -3(x -2)² -5
<h3>Explanation:</h3>The equation of a parabola with vertex (h, k) is given by ...
... y = a(x -h)² +k . . . . . . . for some vertical scale factor "a".
We can find the value of "a" by substituting the coordinates of a point that is not the vertex. Here, that point is the y-intercept: (0, -17).
... y = a(x -2)² -5 . . . . . initial form of the equation for the parabola
... -17 = a(-2)² -5 . . . . . substitute y-intercept values
... -12 = 4a . . . . . . . . . . add 5, simplify
... -12/4 = a = -3
The desired equation is ... y = -3(x -2)² -5.
Answer:
π
Step-by-step explanation:
The standard form of the sine function is
y = a sin(bx + c)
where a is the amplitude, period = and
phase shift = -
here b = , c = -
phase shift = -
= × 2 = π
Canceling units is also called unit analysis.
This is also called dimensional analysis.
What is a unit of analysis in statistics?
- The unit of analysis is the entity that you're analyzing. It's called this because it's your analysis (what you want to examine) that determines what this unit is, rather than the data itself.
- Because it is the analysis you do in your study that determines what the unit is.
- For instance, if you are comparing the children in two classrooms on achievement test scores, the unit is the individual child because you have a score for each child.
For example -
1 ft = 12 in
3 ft =
3 ft = ( 3 * 12 ) in ⇒ 36 in
Learn more about unit analysis
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