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2 years ago

URGENT! (Please give the correct answers!)

Mathematics

1 answer:

Effectus [21]2 years ago

6 0

Answer:

$f(4) = 6$

Step-by-step explanation:

$f(x) = (x-1)(x-2)(x-3)\\\\f(4) = (4-1)(4-2)(4-3)\\\\~~~~~~~=3 \cdot 2 \cdot 1\\\\~~~~~~~=6$

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My salary is £28,860 per year. What is my hourly rate of pay if I work 37 hours a week

Nostrana [21]

Answer:

pay rate £7.80

Step-by-step explanation:

28860 divide by 37 = 780

780 divided by 100 = 7.80

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3 years ago

Find the product of 11/2 with the quotient of 3/7 and 3/10

trasher [3.6K]

(11/2) x ((3/7) / (3/10)

(11/2) x (3/7) x (10/3)

330/42

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3 years ago

If x plus one upon X equal to 11 find the value of x square + 1 upon x square

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3 years ago

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3 years ago

Find the expected value of the winnings from a game that has the following payout probability distribution: Skip Payout ($) 1 2

Nezavi [6.7K]

Answer:

$4.35

Step-by-step explanation:

The expected value of a random variable <em>X</em>, often denoted as E(<em>X</em>), indicates the probability-weighted average of all possible values/events. The general formula of expected value is

$\mathrm{E(\textit X \mathrm)} = \displaystyle\sum_{\mathclap{i=1}}^{k} \ X \times P(X) \\ \\ \\ = X_{1} \times P(X_{1}) \ + \ X_{2} \times P(X_{2}) \ + \ X_{3} \times P(X_{3}) + \ \cdots \ + X_{k} \times P(X_{k})$ .

Therefore, the expected value of the winnings from a game is

$\mathrm{E(\textit X \mathrm)} \ = \ 1 \times 0.35 \ + \ 2 \times 0.2 \ + \ 5 \times 0.1 + \ 8 \times 0.2 \ + 10 \times 0.15 \\ \\ = \ 4.35 \ \ (\mathrm{nearest \ hundredth})$ .

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2 years ago