Answer:
8
Divide both by 8
Which gives you
4/6
That can be simplest form by 2
2/3 is your final answer!
#22 you just figure out the common denominator, then figure out from there and #24 i dont understand
To figure this out, you would first isolate one of the variables in one of the two equations given.
I will first isloate the second equation's Y by subratcting it on both sides to get it onto the other side, thus not changing any of the values in the equation, just moving it around.
The equation would be: x=0+y or simply x=y
You plug in the x to the first equation with parenthesis around it to get it all into on equation: (y)+3y=-4
Add the two like terms, y and 3y to get 4y=-4
Divide that equation by four on both sides to get y=-1
Plug -1 into the second equation that you had moved around (x=y) to get x=-1
So -1=y and -1=x
Answer:
2
Step-by-step explanation:
S=1+1/2+1/4+1/8+...
Multiply both sides by 2:
2S=2+1+1/2+1/4+1/8+....
Subtract equations:
-1S=-2
Divide both sides by -1
S=2
Or you could just keep adding more terms of the series to see it is approaching 2.
1+1/2=3/2=1.5
1+1/2+1/4=1.75
1+1/2+1/4+1/8=1.875
And so on..