Answer:
square root of 53. The first option on the list.
Explanation:
So for this problem, you have to apply the pythagorean theorem.
a^2+b^2=c^2
2^2+7^2= c^2
4+49=c^2
53= c^2
c= square root of 53
answer: Squuare root of 53
x = sqrt45
a^2 + b^2 = c^2
a^2 + 2^2 = 7^2
a^2 + 4 = 49
a^2 = 45
x = sqrt45 or 6.7 (approx.)
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