Al iniciar la semana, el precio del barril de petróleo es de 42.3 dólares. En el transcurso de la semana presentó las siguientes variaciones: subió ¢70, bajó ¢102, subió ¢82, subió ¢10, subió ¢5, bajó ¢75 y finalmente subió ¢17. Considerando el precio inicial, ¿cuál es la variación final que tuvo el precio del barril de petróleo?

c

step-by-step explanation:

x = -5

step-by-step explanation:

hence, the required result is

step-by-step explanation:

suppose we have two matrices a and b

we will assume the two matrices

we have to compute b-a which means subtracting corresponding elements of a from b.

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alright so i think for this one it would to draw it out. this may be hard for me to try and draw, but i will do my best on here:

        r

  /       |     \

notice how it forms 2 triangles inside one bigger triangle.

so if we know the angle spr is the same as psr that is saying the measure of angle p is the same as angle s. this means the big triangle psr is either isosceles or equilateral. in both cases, the triangle is perfectly symmetrical when split down the middle, which is in this case rq. because we know it is perfectly symmetrical on both sides, we know that the two triangles inside the bigger one are equal.