3 x 1/2= 1.5
1kg has been used since 2 packets
1/2 divided by 4 = 0.125kg
1kg + 0.125kg = 1.125kg
flour left= 1.5kg-1.125kg
= 0.375kg
hence ans: 0.375kg
hope this helps :)
Y=x+1
3x+y=21
-----------
-x+y=1
3x+y=21
First do this. Change one (or both) of the equations so that the x and y are on one side, and the number is on the other. Make sure either the x or the y is the same in both equations (in this case, y) and then take one away from the other. The y will cancel out so you can work out x.
3x+y=21 -
-x+y=1
-----------
4x = 20
x = 5
Then add the x into one of the two equations to find out y.
3x + y = 21
(3*5) + y = 21
15 + y = 21
y = 6
To check, put both x any y into the other equation.
-5 + 6 = 1
If the answer is correct, you have correctly solved the equations.
x = 5
y = 6
:D
Answer:
25m :)
Step-by-step explanation:
Answer:
y = -2x + 3
Step-by-step explanation:
4x + 2y = 6
⇔ 2y =
The year 2013 contains four digits {2, 0, 1, 3} that are consecutive.
We want to find the next year such that this happens. We will find that in 18 years this will this event occur next.
The next year that this happens is the year that has the same digits, but the tens and units digits are permuted (as these are the place values with smaller values).
So the next year that this happens is:
2031
It also has the digits {2, 0, 3, 1} which has the same digits as 2013.
To find how many years after this will happen, we just need to find the difference between 2031 and 2013.
This is: 2031 - 2013 = 18
In 18 years this will this event occur next.
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