2 years ago

$30 bat; 15% discount

1 answer:

8 0

Multiply $30 by 0.15 to find the amount discounted:
30x0.15=$4.50

Now subtract 4.5 from 30 to find the final cost of the bat.
30-4.5= $25.50

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The exponential distribution can be used to solve Poisson-type problems in which the intervals are not time. The Air Travel Cons

frutty [35]

Answer:

a) $P(X \ge 490) = 0.628$

b) $P(X \leq 190) = 0.165$

Step-by-step explanation:

a) This is an exponential distribution question since it is a poisson type problem

Mean rate is 0.95 per 1000 passengers

Mean rate, $\lambda = 0.95/1000$

$\lambda = 0.00095$ per passenger

Probability that at least 490 passengers will have their baggage handled properly before the next mishandling occurs :

$P(X \ge x) = e^{- \lambda x}$

$P(X \ge 490) = e^{-490 * 0.00095}$

$P(X \ge 490) = e^{-0.4655}\\P(X \ge 490) = 0.628$

b) Probability that the number will be fewer than 200 passengers

$P(X \leq 190) = 1 - P(X \geq 190)\\P(X \leq 190) = 1 - e^{-190 \lambda} \\P(X \leq 190) = 1 - e^{-190 *0.00095}$

$P(X \leq 190) = 1 - 0.835\\P(X \leq 190) = 0.165$

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2 years ago

3x+8+2ax≥3ax−4a what is x?

Nataliya [291]

X≥
$- \frac {4 (2 + a)}{3 - a}$
solve the inequality by finding the roots and creating test intervals.

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2 years ago

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Factorise : 16x^2 +72xy + 81y^2 -12x +27y

never [62]

Hello!!

It will be the same since there is no common factor. You just need to arrange in order.

6x^2 + 72xy - 12x + 81y^2 + 27y

Good luck :)

5 0

2 years ago

Yasmin has a bag containing 165 colored beads. Her classmates take turns selecting one bead from the bag without looking, record

adell [148]

Answer:

30 , 45 , 51 , 39

Step-by-step explanation:

You just add up the numbers until you get 165

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Natali5045456 [20]

Answer:

378

Step-by-step explanation:

9 by 7 by 6 = 378

multiply the numbers with the others then round if needed to match the question.

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2 years ago