Las ventas diarias de un granero que se rigen por una distribución normal. para estimar el número de ventas por día se escoge una muestra de 10 días de manera aleatoria, dando como resultado una media de 400 u. m. y una desviación típica de 22 u. m. dar un intervalo 3 de estimación para el numero medio de ventas con una confianza del 99%..

add a pic of the graph, then ill edit this "answer" and solve it for you : 3

step-by-step explanation:

you bought 31 v bucks

step-by-step explanation:

25+6=31

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.