Responder:
Número total de bolas = 245/23
Explicación paso a paso:
Dado que:
Bolas blancas = 1/5
Bolas negras = 1/7
Bolas rojas = 7
Sea el número total de bolas = x
Bolas blancas = 1 / 5x
Bolas negras = 1 / 7x
Por tanto, total;
(x / 5 + x / 7 + 7) = x
((7x + 5x) / 35) +7 = x
(12x / 35) + 7 = x
7 = x - 12x / 35
7 = (35x - 12x) / 35
7 = 23 veces / 35
245 = 23x
x = 245/23
Answer:
Step-by-step explanation:
Volume of the cube = s^3
s = 9cm
V = 9 * 9 * 9
V = 729 cm^3
d = mass / volume
d = 3645 / 729
d = 5 grams / cm^3
A fellow BYU courser I see.
Now, I am in the same course as you, but shouldn't there be a "None of the Above" option? (I only finished 1.1 so I don't really know.) I think that is correct.
Based on the picture (I know the picture is almost never drawn to scale but still) I think these line segments aren't parallel.
Also, I think the actual proof involves the Alternate Exterior Angles theorem, and those angles in this case are angles ∠BFC and ∠FCE which aren't listed.
