Two matrices may be added or subtracted only if they have the same dimension; that is, they must have the same number of rows and columns. Addition or subtraction is accomplished by adding or subtracting corresponding elements. For example, consider matrix A and matrix B. A =
There are 17 thirds in 5 4/6
2y + x = -6
y = -2x + 0
We can substitute the second equation into the first one.
2y + x = -6
2(-2x + 0) + x = -6
-4x + x = -6
-3x = -6
Divide -3 on both sides.
x = 2
Now, plug x = 2 into any equation and solve for y.
y = -2x + 0
y = -2(2) + 0
y = -4
The solution to the system of equations is (2,-4).
Answer:
m<DBE =50°
m<ABD=150°
Step-by-step explanation:
Because of Straight Angles, All the angles will add up to 180 degrees
Let x be m<DBE
40+x+70+20=180
x+130=180
x=50
m<DBE will be 50 degrees
To find the m<ABD, we add m<FBA, m<FBE, m<DBE.
70+50+30=150
m<ABD = 150
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