Answer:
y= -11
Step-by-step explanation:
After rearranging equation 2, we get x= y+3/2
Sub it into equation 1
y= 3(y+3/2) + 1
y= 3y+9/2 + 1
y= 3y + 11 / 2
2y = 3y + 11
-y = 11
y = -11
3x² + xy2 – 3xy-y? >> 3x² - xy - y
line 1: = (3x² + xy2)+(-3xy – y?)
ANS 3x² - xy - y 《Correct》
line 2: = x(3x + y2) - y(3x – y2)
ANS 3x² - xy +2y²
line 3: = (x-y) (3x +y?)
ANS 3x² - 2xy - y²
If it incorrect, I'm sorry.
The rule to represent the aritmathic sequence would be :
A(n) = 130 + (n-1) 13
the height in 13 days would be :
A(n) = 130 + (14-1) 13
A(n) = 130 + 169
= 299 inches
(0,-9) could be a solution
Answer:
He is right
Step-by-step explanation:

Hope this helps!