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Setler79 [48]
3 years ago
9

HELP NEEDED!!!

Mathematics
1 answer:
V125BC [204]3 years ago
6 0

a) The formula for compound interest is:

Total = starting amount x (1 + interest rate)^ number of years

b)

Using the given information you have:

1200 = 500 x (1+0.045)^x where x is the length of time you want to find.

1200 = 500 (1.045)^x

Divide both sides by 500:

2.4 = 1.045^x

Use natural logarithms:

ln(1.045^x) = ln(2.4)

Solve for x:

X = ln(2.4) / ln(1.045)

X = 19.889 years ( Round the answer as needed).

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El peso que cargan tres pick-ups están en la razón de 2:6:7, cuánto carga el pick-up más grande, si el pick up menor carga 1500k
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Utilizando proporciones, hay que el pick-up más grande carga 5250 kg.

  • Este problema se resuelve por proporciones, por médio de una regla de três.

El peso que cargan tres pick-ups están en la razón de 2:6:7

  • 2 + 6 + 7 = 15.
  • O sea, el pick-up menor carga \frac{2}{15} de el total, que es equivalente a 1500 kg.
  • El pick-up más grande carga \frac{7}{15} de el total, que es equivalente a x kg.

La regla de três es:

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Aplicando multiplicación cruzada:

\frac{2x}{15} = \frac{1500(7)}{15}

2x = 1500(7)

x = \frac{1500(7)}{2}

x = 5250

El pick-up más grande carga 5250 kg.

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