Answer:
c. histogram.
Step-by-step explanation:
In this case, the most appropiate way to show the results is to group the results in classes (for example from score 0 to 20, 21 to 40, 41 to 60, until 100) and show the relative frequency for each of the classes.
An histogram allows us to present this information graphically in the ways described before.
A pie chart is appropiate to show proportions.
A bar graph is similar but for discrete or non-numerical categories.
A dot plot is adequate por discrete classes and small samples.
The first one it just makes sense.
Answer:
10
Step-by-step explanation:
You combine all of the like terms
7b + (-4b) + (-3b)=0
3+5+2=10
Answer:
Step-by-step explanation:
The equation of a circle centre(h,k) of radius r is given by:
r²=(x-h)²+(y-k)²
If radius, 
Centre, (h,k)=(-2.4,-4.8)
Substitution into the equation of the circle formula
r²=(x-h)²+(y-k)²
The equation of the circle is therefore given as:
