Answer:
The solution is x=-6 and y=7
Step-by-step explanation:
Given equations are:
In elimination method, the co-efficient of one of the variables are equated so that one variable can be eliminated by adding or subtracting the equations
In the given system of equations, the co-efficient of y is already same i.e. 4 so we only have to subtract the equations
Subtracting equation 2 from equation 1
Putting x = -6 in equation 1
Hence
The solution is x=-6 and y=7
Answer:
the length of the wall of the room = 11
Step-by-step explanation:
if it's a square room, area of each wall, floor and top are equal, so,
=》
=》
=》
so, length of wall of the room is 11 meters.
Answer: The coefficients of binomial expansions are calculated using Pascal's triangle.
The answer is true, im pretty sure
I don't know this but I will say C.