We can start by eliminating y. Seeing as they already have opposite coefficients, no multiplication or division needs to be done. So, add the two equations together. 3.2x + (-1.6x) = 1.6x. 4.2 + 3.4 = 7.6. 0.5y + (-0.5y) = 0. This leaves us with 1.6x = 7.6. Now divide both sides by 1.6 to get x = 4.75.
Now we can eliminate x. Since the coefficients of x are not opposites, we need to multiply the bottom equation by 2 on both sides. That leaves us with -3.2x - y = 6.8. Now we can add both equations together. 3.2x + (-3.2x) = 0. 0.5y + (-y) = -0.5y. 4.2 + 6.8 = 11. This leaves us with -0.5y = 11. Divide both sides by -0.5 to get y = -22.
Therefore the answer is B: (4.75, -22)
Answer:
False Option B
Step-by-step explanation:
From the question we are told that:
Sample size 
Assumed degrees of freedom 
Generally for the df of the t test
Since
Therefore
The correct option is
False Option B
Hello!
First we need to find 30% of our laptop. To do so we multiply by 0.3
550(0.3)=165
Now we subtract this cost from our original.
550-165=385
Therefore, the sale price would be $385.
I hope this helps!
Answer:
Step-by-step explanation:
6x-6+35 = 3x+29
6x - 3x = 29-29
3x = 0
x=0
