Okay, I'm here for ya!
What do you need help with? It is correct "If you burn [...] 0.02 mols of propane 44kj of energy [...] released"
What's the problem here?
Edit: "For each gram of propane burned, 50 kJ of energy is released" maybe?
Answer:
y = -0.25 - 8
Step-by-step explanation:
2x + 8y = -64
-2x -2x
----------------------
8y = -2x -64
---- ---- ----
8 8 8
-------------------
y = -0.25 - 8
Step-by-step explanation:
In this case you know that the segment BC was dilated from the origin, producing the image B'C', whose endpoints are:
The image BC was dilated with a scale factor of 2. This means that each coordinate of the endpoints of BC was multiplied by 2.
Therefore, you can conclude that the segment BC is one-half the size of the segment B'C'.
So, you can divide each coordinate of B' and C' by 2 in order to find the coordinates of the points B and C.
Then:
B→
C→
(x+4)(x-1) which expanded out gives
x^2+3x-4
Answer:
Step-by-step explanation:
4x+y=14
x-2y=8
then;
x=8-2y
substitute;
4(8-2y)+8-2y=14
32-8y+8-2y=14
40-10y=14
26=10y
y=2.6 , work out 4x+2.6=14 to get x