En este problema simplemente tenemos que usar la suma de fracciones.
Veremos que entre ambos tienen un frasco entero de miel.
Sabemos que Clauida tiene 3/6 de un frasco de miel, y el hermano tiene 9/18 de un frasco de miel.
En total, entre ambos, tienen:
3/6 + 9/18
Para poder realizar esta suma tenemos que tener el mismo denominador en ambas fracciones, asi que podemos simplificar.
en 9/18 si dividimos numerador y denominador por 9 obtenemos:
9/18 = 1/2
en 3/6 si dividimos numerador y denominador por 3 obtenemos:
3/6 = 1/2
Así:
3/6 + 9/18 = 1/2 + 1/2 = 1
Entre ambos tienen un frasco entero de miel.
Sí quieres aprender más, puedes leer.
brainly.com/question/19527206
Answer:
72
Step-by-step explanation:
It showed us the formula to solve it.
12x12 = 144
144 divided by 2 = 72
72 is the answer.
Answer: C. x=0, y=2, z=5
Step-by-step explanation:
you can just plug in the numbers and see which ones work
Let the three numbers be x, y, and z.
If the sum of the three numbers is 3, then x+y+z=3
If subtracting the second number from the sum of the first and third numbers gives 9, then x+z-y=9
If subtracting the third number from the sum of the first and second numbers gives -5, then x+y-z=-5
This forms the system of equations:
[1] x+y+z=3
[2] x-y+z=9
[3] x+y-z=-5
First, to find y, let's take do [1]-[2]:
x+y+z=3
-x+y-z=-9
2y=-6
y=-3
Then, to find z, let's do [1]-[3]:
x+y+z=3
-x+-y+z=5
2z=8
z=4
Now that you have y and z, plug them into [1] to find x:
x+y+z=3
x-3+4=3
x=2
So the three numbers are 2,-3, and 4.
Answer:
We conclude that the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 31.7 milligrams
Sample mean, 
= 28.5 milligrams
Sample size, n = 9
Alpha, α = 0.05
Sample standard deviation, s = 2.8 milligrams
First, we design the null and the alternate hypothesis
We use One-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have
Now, 
Since,
We fail to accept the null hypothesis and accept the alternate hypothesis. We conclude that the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.
