A) area = length x width = 12 x 6 = 72 sq.cm
B) area = 1/2x base x height = 1/2 x 3 x 6 = 9 sq.cm
C) same as B= 9 sq. Cm
D) subtract area of both triangles from area of rectangle:
72 - 9 -9 = 54 sq. Cm
The answer is A, B, and D
Answer:
A) y=23-5x
b) y= -14+2x
Step-by-step explanation:
a) 5x+y=23
-5x -5x
___________
y=23-5x
b)
2x-y=14
-2x -2x
_________
-y=14-2x
__ ___
-1 -1
y=-14+2x
You just keep multiplying the current value by 0.95 to get next year's value.
The answer is C (-2.2, -3).
In order to find the ordered pair we must use what we know from the first equation in the second. We already know that y = -3, so that goes into the second equation.
y = x - 0.8
-3 = x - 0.8
-2.2 = x