First, we solve the determinants.
3 4
D= =(3*3)-(4*5)=9-20=-11
5 3
-2 4
Dx= =(-2*3)-(4*4)=-6-16=-22
4 3
3 -2
Dy= =(3*4)-(-2*5)=12+10=22
5 4
Now, we calculate "x" and "y":
x=Dx/D=-22/-11=2
y=Dy/D=22/-11=-2
Solution: x=2; y=-2.
3x+2y=18
8x+6y=50
2y=18-3x
Y=9-3/2x
8x+6 (9-3/2x)=50
8x+54-9x=50
-x+54=50
X=4
Y=9-3/2 (4)
Y=9-6
Y=3
Answer: 1/3
Step-by-step explanation: Using Radical Properties, Whenever we have two or more radical terms which are multiplied with same index, then we can put only one radical and multiply the terms inside the radical.
5/2 * 6 = 15
h/6 * 6 = h
so
h = 15
The school is 15ft tall
Answer: 12.5
Step-by-step explanation:
To find an average add up all of the values and divide by how many there are so to do this we add 12+13 to get 25 and there are 2 values so we divide by 2 to get 12.5