13.2*3=39.6= price of 3cds, which is also the price of 2 dvds
39.6/2=19.8= the price of 1 dvd
[1,infinity sign) this is the answer
I have an answer go to this website and find ur answer http://mssimmonsmath.weebly.com/uploads/3/8/0/6/38067085/a1_nov_13_notes.pdf
Answer:
C
Step-by-step explanation:
Given the 2 equations
3x + 4y = 8 → (1)
y - 5x = 2 ← rewrite as
- 5x + y = 2 → (2)
Multiplying (2) by - 4 and adding to (1) will eliminate the y- term
20x - 4y = - 8 → (3)
Add (1) and (3) term by term to eliminate y
23x + 0 = 0
23x = 0 , then
x = 0
Substitute x = 0 into either of the 2 equations and solve for y
Substituting into (1)
3(0) + 4y = 8
4y = 8 ( divide both sides by 4 )
y = 2
solution is (0, 2 )
That is the lines intersect once at (0, 2 )
Answer: 4 1/12
Step-by-step explanation:
