Solve by the substitution method
2x + 9y=41
- 4x + y=13
1 answer:
Answer:
x=-2, y=5. (-2, 5).
Step-by-step explanation:
2x+9y=41
-4x+y=13
---------------
2(2x+9y)=2(41)
-4x+y=13
-----------------------
4x+18y=82
-4x+y=13
------------------
19y=95
y=95/19
y=5
2x+9(5)=41
2x+45=41
2x=41-45
2x=-4
x=-4/2=-2
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1. B 2. A 3. B that’s what you looking for
I think the answer is 7/2. Which is also equal to 3.5 cookies. Because:
1/2 + 3/1
3/1 x2
1/2 + 6/2
= 7/2 = 3.5
3x/4+3=20
<=> 0.75x +3 =20
<=> 0.75x = 17
<=> x = 68/3
