Answer:
square
rectangle
quadrilateral
Step-by-step explanation:
Sides are all equal
Since you need an isolated variable to use the substitution method, we need to re-arrange one of the equations. This will probably be easiest to do with the first one.
Add 5y to both sides of the first equation.
x=10+5y
Now, in the second equation, put in 10+5y in any spot that has an x.
2(10+5y)-10y=20
Distribute the 2 to both numbers in the parenthesis.
20+10y-10y=20
Combine like terms.
20=20
This means that the two equations are actually the same. You can see this if you multiply the whole first equation by 2
2(x-5y=10)
2x-10y=20, which is the same as the second equation. Therefore, the two equations are actually the same one.
ANSWER
EXPLANATION
From the Pascal's triangle,
The coefficients are :
1, 5, 10,10, 5,1
Because of the negative sign, the expansion will alternate sign.
We now put y=5 into the expansion to get,
Answer:
Step-by-step explanation:
Answer:
This means our slope is equal to 
.
Step-by-step explanation:
Your ordered pairs are:
(-4, -4) and (0, 2)
To solve for the slope, we must use slope formula.
Substitute:
Solve:
This means our slope is equal to .
Hope this helped. :)
