Answer:
2y-8
-Step-by-step explanation:
2y +4y = 2y
so
2y - 8
A triangle always equals 180 degrees
Answer:
D
Step-by-step explanation:
a is false since x could be 0.
b is easy to check, just plug numbers in, and we can see that it's false(you would get 0+0=1 and -0-0=-1 once plugged in)
c is also easy to check, just plot the line or simplify the first equation. since (2x+2y)/2=4/2 is also x+y=2, the second equation is also x+y=2, so it must have infinitely many solutions.
d must be true due to process of elimination but let's check to make sure.
7y=14x, divide both sides by 7 to get y=2x and since they're the same equation it must mean that they have infinitly many solutions and we can see that it is correct
Gas exchange occrs in the alevoli which are tiny air sacs in your lungs. the oxygen will then be carried off by capillaries which is part of ghe circulatory system.
Convert both fractions to get a LCD, then subtract
Answer is 3. 1/24
