É bom lembrar que os países classificados como desenvolvidos não formam um conjunto homogêneo. Há diferenças entre eles, principalmente quanto ao desenvolvimento científico e tecnológico. A liderança nesse setor cabe aos países citados a seguir, exceto: a- Japão
b- Alemanha
c- França
d- Venezuela
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In a right-angled triangle: 1- the hypotenuse is the longest side2- we can apply pythagorean rule which states that: (hypotenuse)^2 = (side1)^2 + (side2)^2for the given triangle,longest side is 15 cm  side1 = 9 cmside2 is 12 cm  to check whether the triangle is right-angled or not,compare (15)^2 to the summation of (9)^2 and (12)^in other words, compare 225 to the summation of 81 and 144if they are both equal, then the triangle is right-angles, otherwise, it is not.you haven't provided the diagram showing her work, so i cannot tell the choice. however, apply my explanation to the question you have.

What are the options?  

Ido not see an image did you put one on here?

From my point of view, the answer would be a.