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miss Akunina [59]
3 years ago
12

See image for question. Please show workings.​

Mathematics
1 answer:
nexus9112 [7]3 years ago
8 0

Answer:

  • 14.3 years

Step-by-step explanation:

The average age of 18 girls is 12.

<u>Total age of girls:</u>

  • 18*12 = 216

The average age of 15 boys is 17

<u>Total age of boys:</u>

  • 15*17 = 255

<u>Total age of children:</u>

  • 216 + 255  = 471

<u>Total number of children:</u>

  • 18 + 15 = 33

<u>Average age of children:</u>

  • 471 / 33 = 14.3 (rounded)
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Step-by-step explanation:

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and the other side decreased -4

so the other side is x - 4

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The vertex of the function f(x) exists at a maximum and the vertex of the function g(x) exists at a minimum.

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