Answer:
-2x-2y=-8
-4x-8y=-20
From the 1st eqn
Dividing through by 2
you have
-x-y=-4
Multiply through by -(minus)
x+y=4
x=4-y
Substitute into eqn 2
-4x-8y=-20
-4(4-y)-8y=-20
-16 + 4y - 8y = -20
-4y = -20 +16
-4y = -4
y= 1
Substitute into any of the other eqn's to get x
x= 4-y
x= 4-1
x=3
Answer:
b
Step-by-step explanation:
Answer:
E
Step-by-step explanation:
A. x/yx * zy/yx = 2/x
B. x/y + y/z = (xz+y^2)/yz
C. x*z/z*x = 1
D. (x+y)/(y+z) = y(x+1)/y(1+z) = x+1/1+z
E. x/y / z/y = x/y * y/z = x/z
Answer:
is this an actual question? or you jus sayin stuff
Step-by-step explanation:
Answer:
table; occur; tally mark
Step-by-step explanation:
You would use a table to keep track of a distribution of data. You would have to wait for such data to occur. You could use tally marks to keep track to the data.
Hope this helps.
Sorry if it's wrong though.
