Answer: x=7.2
Explanation:
Use the Pythagorean theorem:a^2+b^2=c^2 c being the hypothenuse and b and a being the other 2 sides
so 7.8*7.8=60.84 3*3+9 60.84-9=51.84 then the square of that would be 7.2 so x=7.2
Answer: 0
Step-by-step explanation: you just have to divide a little bit then you just multiply.
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