If x-y=10 and x squared-y squared =40 then y=?
2 answers:
Solve for y in the first equation
-y=-x+10
y=x-10
Now substitute y in the second equation
x^2-(x-10)^2=40
x^2-(x^2-20x+100)=40
20x-100=40
20x=140
x=7
Plug the value of 7 in to any of the equations
7-y=10
y=(-3)
Final answer: y= -3
12 I know I gave you the wrong answer
You might be interested in
Answer:
for what you have you need to add one more $10 bill.
or make it total $120.25
good luck!!
Answer:
12<14
x<12
14>12
14>x
Step-by-step explanation:
I dont know if it is correct but I think it is that way try
Answer:
prices of food and games and tickets
Answer:
Step-by-step explanation:
To find the 
we must use the cosine theorem.
The cosine theorem says that:
In this case:
So
Answer:
7 21 35 49
3 9 18 27
Step-by-step explanation:
the top is going up by 14 and you subtract 9 from 27
