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aleksandrvk [35]
4 years ago
13

Find the slope of the line that contains the points named. J(1, -4), K(3, -1)

Mathematics
2 answers:
enot [183]4 years ago
6 0
(-1-(-4))/(3-1)
=3/2
The slope is 3/2.
Ket [755]4 years ago
5 0
Y=mx+b
slope: 3/2
y-intercept: -5
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1) UN MOVIL A SE MUEVE DESDE UN PUNTO CON VELOCIDAD CONSTANTE DE 20m/s EN EL MISMO INSTANTE A UNA DISTANCIA DE 1200m, OTRO MOVIL
alisha [4.7K]

Answer:

El móvil B necesita 60 segundos para alcanzar al móvil A y le alcanza una distancia de 2400 metros con respecto al punto de referencia.

Step-by-step explanation:

Supóngase que cada movil viaja en el mismo plano y que el móvil B se localiza inicialmente en la posición x = 0\,m, mientras que el móvil A se encuentra en la posición x = 1200\,m. Ambos móviles viajan a rapidez constante. Si el móvil B alcanza al móvil A después de cierto tiempo, el sistema de ecuaciones cinemáticas es el siguiente:

Móvil A

x_{A} = 1200\,m+\left(20\,\frac{m}{s} \right)\cdot t

Móvil B

x_{B} = \left(40\,\frac{m}{s} \right)\cdot t

Donde:

x_{A}, x_{B} - Posiciones finales de cada móvil, medidas en metros.

t - Tiempo, medido en segundos.

Si x_{A} = x_{B}, el tiempo requerido por el móvil B para alcanzar al móvil A es:

1200\,m+\left(20\,\frac{m}{s} \right)\cdot t = \left(40\,\frac{m}{s} \right)t

1200\,m = \left(20\,\frac{m}{s} \right)\cdot t

t = \frac{1200\,m}{20\,\frac{m}{s} }

t = 60\,s

El móvil B necesita 60 segundos para alcanzar al móvil A.

Ahora, la distancia se obtiene por sustitución directa en cualquiera de las ecuaciones cinemáticas:

x_{B} = \left(40\,\frac{m}{s} \right)\cdot (60\,s)

x_{B} = 2400\,m

El móvil B alcanza al móvil A a una distancia de 2400 metros con respecto al punto de referencia.

3 0
3 years ago
In January, Emma was 62.25 in tall. In December, she was 65.5 inches tall. How much did Emma grow between January and December?
WINSTONCH [101]

she "grew" negative 3.25 inches

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HELP!!!! :( I will give 5 stars!
Reptile [31]
Line was the problem, they’re supposed to subtract 10 not add 10
8 0
3 years ago
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Mars2501 [29]

Answer:

270 per year so 6 years is 1620 and add that with 6000=7620

8 0
3 years ago
Dante rode his bike a mile in 5 minutes. At that rate, how many miles can he ride in an hour?
Step2247 [10]

Answer:

Step-by-step explanation:

direct proportion

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