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Usimov [2.4K]
3 years ago
7

Divide R4 625 amongst Andrew, Brendan, and Clair so that for every R4 that

Mathematics
1 answer:
cestrela7 [59]3 years ago
4 0

Using proportions, it is found that:

  • Andrew gets R 1850.
  • Each of Brendan and Clair get R 1387.5.

<h3>What is a proportion?</h3>

A proportion is a fraction of total amount.

In this problem, the total amount divided is R 4625.

For every R4 Andrew gets, both Brendan and Clair gets R3, hence the ratio is 4:3:3, which means that:

  • Andrew gets \frac{4}{4 + 3 + 3} = \frac{4}{10} = 0.4 of the total amount.
  • Brendan gets \frac{3}{4 + 3 + 3} = \frac{3}{10} = 0.3 of the total amount.
  • Clair gets \frac{3}{4 + 3 + 3} = \frac{3}{10} = 0.3 of the total amount.

Then:

A = 0.4(4625) = 1850

B = C = 0.3(4625) = 1387.5

Hence:

  • Andrew gets R 1850.
  • Each of Brendan and Clair get R 1387.5.

You can learn more about proportions at brainly.com/question/24372153

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Use a t-distribution to answer this question. Assume the samples are random samples from distributions that are reasonably normally distributed, and that a t-statistic will be used for inference about the difference in sample means. State the degrees of freedom used. Find the proportion in a t-distribution less than -1.4  if the samples have sizes 1 = 12 and n 2 = 12 . Enter the exact answer for the degrees of freedom and round your answer for the area to three decimal places. degrees of freedom = Enter your answer; degrees of freedom proportion = Enter your answer; proportion

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