Adding both equations cancels y:
<span>4x + 8y = 16
</span><span>4x - 8y = 0
-----------------+
8x = 16 => x=2
filling in x=2 in the first equation gives:
4*2 + 8y = 16 => 8y = 8 => y=1
So (2,1) is the (x,y) pair that solves the two equations. Answer C.</span>
138c since 1 pound of apples=43c
Okay post them 1 at a time
Given:
Cost of small candles = $4.00
Cost of large candles = $6.00
They have at most 50 candles, and want to make at least $100.
To find:
The system of linear inequalities represents the situation.
Solution:
Let x be the number of small candles and y be the number of large candles.
At most 50 candles means total candles must be less than or equal to 50.
![x+y\leq 50](https://tex.z-dn.net/?f=x%2By%5Cleq%2050)
Want to make at least $100. It means, the total sales must be greater than or equal to $100.
![4x+6y\geq 100](https://tex.z-dn.net/?f=4x%2B6y%5Cgeq%20100)
Therefore, the inequalities in the system of linear inequalities are
and
.
The first option :
Multiply the first equation by 8 and the second equation by 2
would not result in the elimination of the variables in this system