First step find a common multiple, e.g. 45 and subtract
9x + 5y = 28 * 5
5x + 9y = 56 * 9
45x + 25y = 140
-(45x + 81y = 504)
-56y = -364
56y = 364
y = 6.5
Substitute into any equation
9x + 5(6.5) = 28
9x + 32.5 = 28
9x = -4.5
x = -0.5
x = -0.5 , y = 6.5
- Density of alcohol=79g/ml
- Density of water=100g/ml
We know
- if a object has higher d ensity than water then it would sink in water and if it has lower density than water then it float over water
Clearly
So alcohol would float over water
Answer:
£50.63
Step-by-step explanation:
If €4 = £3
Therefore one €1 = £3/4
Now, Converting €67.50 to pounds,
67.50 * 3/4 = £50.625
£50.63 (answer rounded to 2 DP)
Current time conversion,
67.50 Euro equals 60.68 Pound sterling
Y=mx+b if you mean graphing
m=rise/run or slope
b=your y intercept in linear equations they have them or you rearrange/get the y (which is at the start of the problem) alone. then you graph like say..
y=2x+1
you would rise 2 and go right 1 and you start on 1 on the y intercept of graph
