Answer:
x = 7 / 2, y = - 5 / 2
Step-by-step explanation:
3x + y = 8 ------> equation 1
3 ( 3x + y = 8 )
9x + 3y = 24 ------> equation 2
x - 3y = 11 ------> equation 3
Add equations 2 & 3,
9x + 3y = 24
x - 3y = 11
_________
10x + 0 = 35
10x = 35
x = 35 / 10
x = 3.5
Substitute x = 3.5 in equation 1,
3x + y = 8
3 ( 3.5 ) + y = 8
10.5 + y = 8
y = 8 - 10.5
y = - 2.5
x = 3.5
= 35 / 10
x = 7 / 2
y = - 2.5
= - 25 / 10
y = - 5 / 2
Answer:
8
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
5% of 20 is 1
Answer:
B
Step-by-step explanation:
Quadratic graphs are pretty weird. If it says (x-3)^2 is means x will shift to the right. It shifts to the left, so it is (x+2)^2, and goes down 3, so
(x+2)^2 -- 3
Answer:
The question asks for the number of movies that, when averaged with $100, would come down to $2.50.
Step-by-step explanation:
To elaborate more in depth, Here's an equation:
And, if I did it correctly, the total number of movies needed would be 200
