Use Desmos it helps you with questions like that
substitution and elimination means that you need to use one equation and substitute it in place of some variable in the other equation.
Consider the above two equations.
Take equation 1, which is 4x-2y=22 => x=(22+2y)/4
substitute the x value gained above in equation 2.
so, 2((22+2y)/4)+4y=6
22+2y+8y=12 => 10y = -10 => y= -1.
Substitute y= -1 in x value obtained in the beginning.
So, x= (22 - 2)/4 => 5.
There fore, x= 5 and y= -1
Hope it helps.
Answer:
Step-by-step explanation:
There are two answers to this.
1.
The order is ACB. That means that B is beyond C.
In which case AB = AC + BC
AB = 22 + 13
AB = 35
2
The order is ABC (which means that B is between A and C.
AB = AC - BC
AB = 22 - 13
AB = 9
Please don't ask me what the answer is. The question does not make it clear enough to give you one answer. I do suggest you draw a diagram to show both possibilities. Your teacher will likely applaud you for poking holes in the question.
Answer:
A
Step-by-step explanation:
1.3 times.45+1.3
