Answer:
x = 10
Step-by-step explanation:
x = 4 + (4x-4) ^ (1/2)
First, we rewrite the expression:
x = 4 + (4x-4) ^ (1/2)
x = 2 (2+ (x-1) ^ (1/2))
x = 4 + 2 (x-1) ^ (1/2)
From here we get a solution for x = 10
To check it we substitute x = 10 in the expression:
10 = 4 + 2 (10-1) ^ (1/2)
10 = 4 + 2 (9) ^ (1/2)
10 = 4 + 2 (3)
10 = 4 + 6
10 = 10
Answer:
The solution is:
x = 10
Answer:
La parte de las escalara desde el piso al borde de la barda es de 5.66 metros.
⭐Explicación paso a paso
Para resolver haremos uso de identidades trigonométricas. Nos apoyaremos a su vez en la imagen adjunta, en el cual podemos representar la situación como un triángulo rectángulo.
Cateto opuesto: 4 metros
Cateto adyacente: 4 metros
Hipotenusa: longitud de la escalera (l)
Por Pitágoras:
l² = 4² + 4²
l² = 16 + 16
l² = 32
l = √32
l = 4√2 m
l = 5.66 metros
Igualmente, puedes consultar el siguiente ejercicio que es similar:
brainly.lat/tarea/257278 (Una escalera de 10 m de longitud esta apoyada sobre la pared . el pie de la escalera dista 6 m de la pared . ¿que altura alcanza la escalera sobre la pared?)
Step-by-step explanation:
Answer:
It will take 17.5 minutes to reach 50 degrees F.
Step-by-step explanation:
Current temperature = -13 degrees F
With the engine on, the temperature goes up by 3.6°F per minute.
Let us assume that it takes x minutes to reach 50 degrees F.
So, the time taken will be =
=> 
=> 
x = 17.5 minutes
The expression that tells how much the temperature needs to change from -13°F to 50°F is :
It will take 17.5 minutes to reach 50 degrees F.
F(x) = 3-2x/x that is the answer
Three students want to estimate the mean backpack weight of their schoolmates. To do this, they each randomly chose 8 schoolmates and weighed their backpacks. Then as per the given sample data,
(a) The sample means of the backpacks are: 6.375,6.375,6.625
(b) Range of sample means: 0.25
(c)The true statement is: The closer the range of the sample means is to 0, the less confident they can be in their estimate.
For the first sample, mean= 6.375
For the second sample, mean= 6.375
For the third sample, mean= 6.625
Range of sample means=Maximum Mean- Minimum Mean
= 6.625 - 6.375
= 0.25
The students will estimate the average backpack weight of their classmates using sample means, the true statement is:
The closer the range of the sample means is to 0, the more confident they can be in their estimate.
Learn more about range here:
brainly.com/question/24326172
#SPJ1
