Answer:
When heated calcium carbonate forms calcium oxide and carbon dioxide.
To tell if an equation has infinite solutions, the equation will be equal to each other.
For example,
x = x
x + 1 = x + 1
x - y = x - y
And so on...
And in special cases,
0x = 0
0x = 0(y + 1)
They have infinite solutions because there's no constant to determine the variable.
Answer:
40%
Step-by-step explanation:
(21-15)/15=0.4
0.4×100=40
Answer:
its 3
Step-by-step explanation:
selcet 3 it goes plus 3 then back to neg 4 its the 3rd option
The equation for working out the slope of a linear line is:
, where x and y are the coordinate pairs.
So just pick two of the purple dots on the graph and fill in the equation.
I'll pick the dot that's (-4, 1) and (4, -7).
Now I just do
, which is just
when simplified.