Answer:
1) response b
2) x=35 (response c)
3) response d
Step-by-step explanation:
1) The Pythagorean theorem's "C" value is the value of your hypothenuse, which means that it would be c^2-b^2=a^2
You would set it up as "7^2-4^2", and then to get rid of the squared value, you would have to square root it
2) In this question, you're finding the hypothenuse, therefore the two values given are your "a" and "b" values.
[tex]\sqrt{21^{2} +28^{2} } =x[/tex]
[tex]\sqrt{441+784}=x[/tex]
[tex]\sqrt{1225} =x[/tex]
x=35
3) This is pretty much self explanatory if you know the C value is the hypotenuse
[tex]\sqrt{4^{2}+5^{2} }[/tex]
[tex]\sqrt{16+25}[/tex]
[tex]\sqrt{41}[/tex]
