3x-y=6
y=x-4
solve by substitution
3x-x+4=6
2x=2
x=1
Now that you know x, but in in the equation to find y (either equation will work)
y= 1-4
y= -3
now that you have both answers, let's check them.
3(-1) - (-3) =6
yes, it works....
Hopefully this makes sense!
The answer would be -3. if x is -3, then in the equation x2 - x, we would replace both x with -3. So then it would be -3 times 2 minus -3 And if we multiply -3 times 2 we get -6 and -6 minus -3 is -3. I hope this helped you, sweetheart.
Answer:
145
Step-by-step explanation:
angles in a pentagon add up to equal 540
Hence, 110 + 90 + 80 + 115 + v = 540
( note that we just created an equation that we can use to solve for v )
We now solve for v using the equation created
110 + 90 + 80 + 115 + v = 540
step 1 combine like terms
110 + 90 + 80 + 115 = 395
we now have 395 + v = 540
step 2 subtract 395 from each side
540 - 395 = 145
395 - 395 cancels out
we're left with v = 145
8x+4 would be the answer if you combine like terms
Answer:
Step-by-step explanation:
9/16=.5625
Round that to the nearest whole number would be 1
