Solving the second equation for y..
2x-y=7 divide both sides by -1
y-2x=-7 add 2x to both sides
y=2x-7
When a solution exists, y=y, so we can say:
2x-7=2x+3 subtract 2x from both sides
-7=3
-1 != 3
Since the above is never true, there are no solutions to this system of equations.
Intuitively, this is because both lines have the same slope, they are parallel, and have an different y-intercept, thus they will never cross each other...
Answer:
Step-by-step explanation:
Answer:
28
Step-by-step explanation:
5 : 2
since this is a simplified ratio, they have a common factor. let's say it is 'x'
so now :
5x : 2x
we know that 5x is lilies, and we also know that she has 20 lilies, so:
5x = 20
x = 4
the daisies would be 2x so 2*4 = 8
total flowers is 20 + 8
28
Answer:
Step-by-step explanation:
Ok, so there are 18 people. If 8/9 have umbrellas, how many have umbrellas?
There is a simple solution to this.
First, lets find out how much people is 1/9
We can do this by dividing 18 by 9 to get 2
So 1/9 of the group is 2 people.
Now you can use this to find 8/9 by multiplying 2 by 8
This gives you the total of 16
Another way you could do this was take the answer from the first step and subtract that from the 18
9/9 - 1/9 = 8/9 => 18 - 2 = 16
Hope this helps! =)
Answer:53
Step-by-step explanation:
