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ra1l [238]
3 years ago
15

Ben is 12 years older than Ishaan. Ben and Ishaan first met two years ago. Three years ago, Ben was 4 times as old as Ishaan. Ho

w old is Ben now?
Mathematics
1 answer:
Stels [109]3 years ago
7 0

Answer:

Ben is 19 Ishaan is 7

Step-by-step explanation:

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Solve for x. show your work. 2x^2+8x=-10
malfutka [58]

Answer:

120

Step-by-step explanation:

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2 years ago
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When Ryan is serving at a restaurant, there is a 0.75 probability that each party will order drinks with their meal. During one
Triss [41]

Answer:

0.82 = 82% probability that at least one party will not order drinks

Step-by-step explanation:

For each party, there are only two possible outcomes. Either they will order drinks with their meal, or they will not. The probability of a party ordering drinks with their meal is independent of other parties. So the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

When Ryan is serving at a restaurant, there is a 0.75 probability that each party will order drinks with their meal.

This means that p = 0.75

During one hour, Ryan served 6 parties. Assuming that each party is equally likely to order drinks, what is the probability that at least one party will not order drinks?

6 parties, so n = 6.

Either all parties will order drinks, or at least one will not. The sum of the probabilities of these events is decimal 1. So

P(X = 6) + P(X < 6) = 1

We want P(X < 6). So

P(X < 6) = 1 - P(X = 6)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 6) = C_{6,6}.(0.75)^{6}.(0.25)^{0} = 0.18

P(X < 6) = 1 - P(X = 6) = 1 - 0.18 = 0.82

0.82 = 82% probability that at least one party will not order drinks

5 0
3 years ago
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8cm = 0.08m

Step-by-step explanation:

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from cm to m.

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I need help on this problem please
andrew11 [14]

Step-by-step explanation:

side ratio =    big/small   = 28/4 = 7

perimeter ratio = side ratio = 7

-> perimeter ratio = big / small = big/34 = 7

-> big perimeter= 7*34 = 238

7 0
3 years ago
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1. Simplify. (343)1/3
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1) 343/32 or 10.71875 or 10 23/32
2)-8
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