Just plug in the numbers:
4: 16 + 24 = 40 YES
5 = 25 + 40 ≠ 40 NO
8: 64 + 48 ≠ 40 NO
10: 100 + 60 ≠ 40 NO
So A. is the correct answer. Just to be sure:
-10: 100 + ( - 60) = 40
Your answer is A. Hope that helps! :)
Answer:
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Step-by-step explanation:
Answer:
y=x/4
Step-by-step explanation:
add x to the other side of your equation so: 4y = x
now divide both sides by 4 so your y is isolated: y=x/4
Use pythagorean theorem
a^2 + b^2 = c^2
fill in known values
12^2+9^2 =c^2
simplify
144 + 81 = c^2
225 =c^2
square both sides
15 = c= hypotenuse