Answer:
Using the elimination method to solve for x and y; ANSWER: y=2 & x=-20
Step-by-step explanation:
1) It helps to visualize the equation if you put the second equation underneath the first like regular adding.
(2x+10y= -20)
+ (-x+4y= 28)
____________
?
2) You always want to cancel out one value (x or y) to start the process.
In this case, if I can get a -2x to cancel out 2x (neg. and positive cancel), that would cancel out the x's in the two equation. To do that, I would multiply by 2 to the second equation and add like you would normally (like terms with like terms, x with x and y with y)
2x+10=-20 2(-x+4y=28) ---> 2x+10y= -20 <u><em>plus</em></u> -2x+8y=56 --->18y=36 (this is the final simplified outcome)
3) find y so y =36/18 so y =2
4) Plug y=2 back into one of the original equation and solve for x
2x+10(2)= -20 ---> x=-20
The easiest answer I know is if you swap the 
s with 
s, then there will be two equations called parabolas. They open upward if the value is positive and open downward if the value is negative. If the exponent is 2, then it's a parabola. If it's 3, then it's a cubic function, because cube is for "3". Square is for "2". If you look at both parabolas, you can see that 
is wider than 
.
So the best answer I can think of is She made a mistake because the parabola on the 10x² graph is wider than the (5x)² graph. Also, it's because 5x and 10x are not the same thing. When an x value increases, the graph is narrower.
Answer:
40=5×8
Step-by-step explanation:
I think, hope this helps
Answer:
The answer is D because when you plug in 0 for the x value, you get positive 2
