Step-by-step explanation:
y=2x+9
y=6−x
(y-2x=9)(-1)
y+x=6
-y+2x=-9
y+x=6
3x=-3
x=-3/3=-1
sub x=-1 in eq 1
y-2(-1)=9
y+2=9
y=9-2=5
so (-1;5) is the only solution for this system
(hope it's correct)
Answer:
Step-by-step explanation:
50+30=80 products which add up to £200
200/80=which is 2.5 or £2.50
Answer:
The total frequency of deaths is 97,118.
Step-by-step explanation:
The total frequency is found by summing up the frequency of 2006, 2007, 2008 and 2009:
frequency = 6,605 + 702 + 88,011 + 1,790
frequency = 97,118.
Answer:
B² - 4AC < 0
Step-by-step explanation:
Check for:
B² - 4AC
The equations for which
B² - 4AC < 0
have complex roots
For A, B and C, use this form of the quadratic:
Ax² + Bx + C = 0
Answer:
I say the inequality with the greater than or equal
Step-by-step explanation:
They want to reach there goal so it’s more or equal to