Answer:
C=13
Step-by-step explanation:
Pythagorean theorem
a^2 + b^2=c^2
a squared plus b squared equals c squared
It should be,
4x-8=2x-10 because you substitute that for y.
Now you do,
4x-2x because you do the opposite of the positive 2x as you bring it to the other side.
That is,
2x-8=10 now you bring the 8 to the other side.
2x=10+8 I added it because I do the opposite and it is a negative 8 so I add.
2x+18 now divide
x=9 that's the answer.
Answer:
<em>D. y=-3x</em>
Step-by-step explanation:
<u>Direct Proportion</u>
A direct proportion is a relation between variables where their ratio is a constant value. This means that if y and x are proportional, then:

Where k is the constant of proportionality.
Solving for y:
y=kx
The only choice representing a direct proportion is:
D. y=-3x
The answer is.... B!!
This is the answer because if you fill in X as 4, then you would end up with 16 and the square root of 16 is 4!!
I hope this helps!!