Answer:
Bar charts are for discrere data. That is, can only take particular values, eg number of children, which can only take a whole number, or favourite football team for instance. They typically have gaps between the bars to indicate the separateness of each value.
Histograms are either continuous (height) or grouped discrete data and don’t have gaps between the bars. Also, with Histograms, since the width of each bar is not necessarily the same, the area of the bar and not its height indicates the frequency
Answer:
10
Step-by-step explanation:
Answer:
The equations 3·x - 6·y = 9 and x - 2·y = 3 are the same
The possible solution are the points (infinite) on the line of the graph representing the equation 3·x - 6·y = 9 or x - 2·y = 3 which is the same line
Step-by-step explanation:
The given linear equations are;
3·x - 6·y = 9...(1)
x - 2·y = 3...(2)
The solution of a system of two linear equations with two unknowns can be found graphically by plotting the two equations and finding the coordinates of the point of intersection of the line graphs
Making 'y' the subject of both equations gives;
For equation (1);
3·x - 6·y = 9
3·x - 9 = 6·y
y = x/2 - 3/2
For equation (2);
x - 2·y = 3
x - 3 = 2·y
y = x/2 - 3/2
We observe that the two equations are the same and will have an infinite number of solutions
Just add the weights together. This comes out to 22lb and 18 oz, but there are 16 oz in a pound, so 23 lb and 2 oz.
Answer:
3 inches and 9 inches
Step-by-step explanation:
Area of a trapezoid is given by
A = 1/2 (b1+b2)*h where b1 and b2 are the lengths of the bases
b1 =b
b2 =b1+6 = b+6
h =6
A = 36
Substituting in what we know
36 = 1/2 (b+b+6)*6
Simplifying
36 = 3 (2b+6)
36/3 = 3/3 (2b+6)
Divide each side by 3
12 = 2b+6
Subtract 6 from each side
12-6 =2b+6-6
6 =2b
Divide each side by2
6/2 =2b/2
3=b
b1 =b =3
b2 =b1+6 = b+6 = 3+6 =9
One base is 3 and the other is 9
