Answer:
(3, -1)
Step-by-step explanation:
The easiest way to solve this system of equations is by elimination:
3x + y = 8
2x - y = 7
Add the two equations together:
(3x + 2x) + (y - y) = (8 + 7)
5x = 15
x = 3
Substitute x back into the equation:
2x - y = 7
2(3) - y = 7
6 - y = 7
- y = 1
y = -1
The fourth option, (3, -1)
Answer:
Bottom left
Step-by-step explanation:
A function cannot have more than one y value for any x value, hold a piece of paper up as a vertical line test. If the line on the graph intersects your vertical line more than once, it is not a function.
I'm not familiar with the use of square brackets/parentheses
I'm assuming it wants (3x15) times (2x10) then that times'd by 2x.
150-2x(900)
150-1800x doesn't make sense however. Can you rephrase the question?
Answer:
Step-by-step explanation:
The area of a square is found in the formula
We have the Area value so we will plug it in:
Take the square root of both sides to undo the square on the s to get that
s = 9
She is incorrect
the GCF of 2, 4 and 8 is 2 (not 8 has she has written)
the GCF of x2, xy and xy4 is x not x2y4
Correct GCF of the 3 terms is 2x