Queremos encontrar la velocidad promedio de un automóvil dado que conocemos cuanto se desplaza y cuanto tarda en realizar ese desplazamiento. Veremos que la velocidad promedio es 45.3 millas por hora.
Recordar que definimos velocidad promedio como el cociente entre la distancia recorrida y el tiempo que se tarda en recorrer esa distancia.
Aca tenemos:
Desplazamiento = (30 + 1/5) cm
Tiempo = (2/3 horas)
Entonces la velocidad esta dada por:
Asi podemos concluir que la velocidad promedio es 45.3 millas por hora.
Sí quieres aprender más sobre velocidad, puedes leer:
brainly.com/question/25316464
Answer:
the graph of the function f(x) = −3x2 − 3x + 6 is shown. Which statements describe the graph? Select three options.
On a coordinate plane, a parabola opens down. It goes through (negative 2, 0), has a vertex at (negative 0.5, 6.75), and goes through (1, 0).
The vertex is the maximum value.
The axis of symmetry is x = negative one-half.
The domain is all real numbers.
The range is all real numbers.
The function is decreasing from (−∞, 6.75).
Step-by-step explanation:
Answer:
y= -x^2-2x-4
Step-by-step explanation:
This is standard form
Answer:
- length: 32 in
- width: 21 in
Step-by-step explanation:
If the width of the original piece of sheet metal is x, then the length is 2x-10. Subtracting a 5" square from each corner makes the bottom of the box have dimensions (x-10) and (2x-20). The volume of the box is then ...
5(x -10)(2x -20) = 1210 . . . . . . volume is the product of the dimensions
10(x -10)² = 1210 = 10(11²) . . . . factor the equation
(x -10)² = 11² . . . . . . . . divide by 10
x = 11 + 10 = 21 . . . . . .take the square root, add 10
The length and width of the original piece of sheet metal were 32 inches and 21 inches, respectively.
Answer:
96 square inch
Step-by-step explanation:
=6.5 cm^2 = 1 in^2
So,
=624 cm^2 / 6.5 cm^2
= 96 in^2
