3x+2y=9
3x+2(4x-1)=9
11x-2=9
+2 +2
11x=11
X=1
Y=4x-1
Y=4(1)-1
Y=3
Answer:
n<2
Step-by-step explanation:
-2n+5>1
-2n>1-5
(-2n>-4)divide by -2
Answer:
11 L of 20% juice and 4 L of 5% juice
Step-by-step explanation:
Let
x L = amount of 20% juice
y L = amount of 5% juice
<u>20% juice:</u>
Amount = x L
Amount of juice
L
<u>5% juice:</u>
Amount = y L
Amount of juice
L
<u>16% juice:</u>
Amount = 15 L
Amount of juice
L
We mixed x L of 20% juice with y L of 5% juice to get 15 L of 16% juice, so

and

From the first equation:

Substitute it into the second equation:

10.43 pieces of yarn could be cut from the roll