Answer:
38 square inches.
Step-by-step explanation:
First, the figure must be broken down into two shapes to solve for the area. The easiest way to do this is through a triangle and a rectangle.
This leaves a rectangle with a height of 8 in and a width of 4 in, as well as a triangle with a slant of 5 in, a base of 4 in, and height of 3 in.
Then, solve for the area of the two shapes.
Rectangle:
Area = L x W
4 x 8
= 32 inches squared.
Triangle:
Area = (1/2)(B x H)
(1/2)(4 x 3)
(1/2)(12)
= 6 inches squared.
Add these two values for a total area of 38 square inches.
Answer:
3x(x – 3)(x2 + 3x + 9)
Step-by-step explanation:
Because 3x4 – 81x=3x4-3x3
and the formula is
a3-b3=(a-b)(a2+ab+b2)
but since here it is 3x4 we put 3x before the formula.
The associative property of addition is shown in equations where the order in which the evaluation is made does not change the result, providing the numbers remain in the same order. Option B demonstrates this.
To work out who the unknowns in the room are, we can establish that c = p+ 9
c + p = 25. The unknowns in the room are there the total number of
parents in the room, and the total number of teachers in the room.
GRAPHING CONS
1) hard to graph by hand. Often you need a graphics calculator or a computer software like maple or matlab. Or the graph has to be given.
2) hard to tell the exact solution, just by observing point of intersection. for example if x = 2.8675, the viewer would say x= 3.
3) sometimes not easy to decide the axis window of y and x axis. For example if the solution is very large like x = 100000 and your graph ends at x = 100, you cannot see the solution
SUBSTITUTION CONS
1) Becomes tedious if a system has too many equations or variables
ELIMINATION PROS/CONS
1) basically same as substitution
