idkmaths
idkmaths idkmaths
  • 29-06-2020
  • Mathematics
contestada

pls help I dont know how to work it out​

pls help I dont know how to work it out class=

Respuesta :

tonb
tonb tonb
  • 29-06-2020

Answer:

10 red, 35 blue

Step-by-step explanation:

2/9 of the 45 marbles must be red.

2/9 * 45 = 10

Answer Link
Pascalkings
Pascalkings Pascalkings
  • 29-06-2020

Answer:

10

Step-by-step explanation:

let's make the number of red marbles x

so probability of getting red marbles is x/45

so;.

[tex] \frac{x}{45} = \frac{2}{9} [/tex]

[tex] 45 \times \frac{x}{45} = \frac{2}{9} \times 45[/tex]

[tex]x = \frac{2}{9} \times 45[/tex]

[tex]x = 10[/tex]

so the number of red marbles is 10

Answer Link

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