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pentagon [3]
3 years ago
10

How many kilograms of tin will be required to make 250 kg of an alloy, if the alloy must contain 81% copper, 14% tin and 5% lead

?
Mathematics
2 answers:
uysha [10]3 years ago
5 0

Answer:

35

Step-by-step explanation:

all are obeying a constant ratio

  • copper 81
  • tin 14⇒?
  • lead 5
  • total 100 ⇒250
  • ?=250*14/100=35
Nataly_w [17]3 years ago
3 0
The answer is 35bb. good luck. by.

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Mandy divided a 12-pound bag of oranges into 5 equal piles. Which RATIONAL numbers represents the weight of the oranges in each
Likurg_2 [28]

The weight in each one should be 2.4 pounds


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3 years ago
Halle la ecuación del eje x y la ecuación del eje y, usando dos puntos que se encuentren sobre los mismos.
lisov135 [29]

Una linea recta ( cualquier eje coordenado es una línea recta) queda definida si se conocen dos puntos que están sobre ella.

Solución:

Ecuación del eje x      y = 0

Ecuación del eje y      x = 0

Para darle respuesta a la pregunta podemos seguir el siguiente procedimiento:

  • Escogemos dos puntos arbitrarios sobre el eje x, por ejemplo

P ( 2 ; 0 )  y Q ( 5 ; 0 )         ( todos los puntos sobre el eje x tienen coordenada y = 0.

Según la cual  m = (y₂ - y₁)/ ( x₂ - x₁ )    m = 0

  • Usamos la ecuación pendiente-Intercepto

y = m×x + b         donde m es la pendiente y b el intercepto con el eje y

y entonces tenemos:

  • m = 0    b ( 0 ; 0 )
  • Por sustitución en la ecuación pendiente-intercepto

y = 0

Procediendo de forma similar obtendremos la ecuación del eje y

P´( 0 ; 4 )     Q´( 0 : 8 ) entonces

y = m×x + b

En este caso, la pendiente no es definida ( tang 90° ) y b es de nuevo el punto b ( 0 ; 0).

A partir de  que todos y cada uno de los puntos sobre el eje y son  de valor 0 para x, concluímos que  ecuación del eje y es

x = 0

Enlaces de interés:brainly.com/question/21135669?

8 0
2 years ago
6. Tasha walked 6,618 feet. What is the distance she walked in yards?
juin [17]

The answer is 2206.

Step-by-step explanation:

3 feet = 1 yard

so you divide 6618 by 3 to get 2206

6 0
2 years ago
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