8m^2+ 40m ------------------- 8m
1 answer:
You might be interested in
Adding both equations will eliminate a variable in the system of equations
Step-by-step explanation:
Given equations are:
One of the methods to solve simultaneous linear equations is elimination. In elimination one of the variables is eliminated from the system to find the value of other variable.
In the given equations we can see that the coefficients of y in both equations are same with opposite signs so adding both equations will eliminate the variable y from the system.
Hence,
Adding both equations will eliminate a variable in the system of equations
Keywords: Linear equations, variables
Learn more about linear equations at:
#LearnwithBrainly
Answer:
87 cm²
Step-by-step explanation:
there is 1 triangle and 1 rectangle in the diagram. so you have to find the area of the both polygons and sum up to find the total area of polygon
area of triangle formula:
1) area of triangle AED
base = 12 cm
height = 4.5 cm
area:
area of rectangle formula:
2) area of rectangle ABCD
length = 12cm
height = 5 cm
area:
3) area of whole polygon
= area of triangle AED + area of rectangle ABCD
= 27 cm² + 60 cm²
= 87 cm²