Answer:
y=3
x=3
Step-by-step explanation:
2x +3y=15
2x-2y=-12
y=3
x=3
Answer: 0.067 litres of water
Step-by-step explanation:
The mode is:
Concentration of new solution = Moles of acid in original solution / (Volume of original solution + Volume of water added)
Assume volume of water added is w.
12 = 16 (0.2) / (0.2 + w)
(0.2 + w) * 12 = 3.2
0.2 + w = 3.2 / 12
w = (3.2 / 12) - 0.2
w = 0.067 litres of water
Answer: y = 31
Step-by-step explanation:
The equation of a line is y = mx+b
Plugging in the values, we get
y = 4*8 + (-1)
y = 32-1
y = 31
Answer:
71 and 72
Step-by-step explanation:
a+b=8
cd id divisible by 8.
ab=17,26,35,44,53,62,71
The only number above with a consecutive number of 8 is 71. (71 and 72)
