Answer:
XY = 8 and YZ = 20
Step-by-step explanation:
If XY and YZ are on the one line, we can write
XY + YZ = 28
(2x+2) + (9x - 7) = 28
2x+2 + 9x - 7 = 28
11x - 5 = 28
11x = 33
x = 3
XY = 2x+2 = 2*3 + 2 = 8
YZ = 9x - 7 = 9*3 - 7 = 27 - 7 = 20
Answer:
The atom of carbon weighs more
Step-by-step explanation:
we have
<em>Atom of carbon weighs</em>

<em>Atom of hydrogen weighs</em>

Compare

therefore
The atom of carbon weighs more
The answer to that is: -12f+6g
Hope this helps ;-)
Answer:
i think b. at least one of them contracted a lung disease