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2 years ago

9

1/2 that has a denominator of 10 add 3/10

2 answers:

Pavel [41]2 years ago

8 0

Answer:

4/5

Step-by-step explanation:

1/2= 5/10

3/10+5/10=8/10

8/10= 4/5

sammy [17]2 years ago

5 0

8/10 or 4/5 because the common denominator is 10 so the numerator would be 5. 5/10 plus 3/10 is 8/10 and that simplified to lowest terms, is 4/5.

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Assume that there are an equal number of births in each month so that the probability is that a person chosen at random was born

NikAS [45]

Answer:

0.2773 = 27.73% probability that at the May celebration, exactly two members of the group have May birthdays

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they have a birthday in May, or they do not. The probability of a person having a birthday in May is independent of any other person. This means that 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.

Probability of a person being in May:

May has 31 days in a year of 365. So

$p = \frac{31}{365} = 0.0849$

Group of 20 friends:

This means that $n = 20$

What is the probability that at the May celebration, exactly two members of the group have May birthdays?

This is P(X = 2).

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

$P(X = 2) = C_{20,2}.(0.0849)^{2}.(0.9151)^{18} = 0.2773$

0.2773 = 27.73% probability that at the May celebration, exactly two members of the group have May birthdays

3 0

3 years ago

Hey can I have some help with this I am very confused

aniked [119]

#a

m<5=40°

Reason-Its Given

#b

m<2=140

Reason-Given

#c

<5 and <2 are linear pair(looked properly in diagram) Hence they are supplementary.

#d

<5 and 2 are same side interior angles (Clearly shown on diagram .

We can call them co responding interior angles and their sum will be 180 if lines are parallel

#e

a||b

Let's verify

Let the angle below <1 be <3

Now

<2+<3=180

<5+<4=180

<5=<2

$\\ \sf\longmapsto$

Hence verified

4 0

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tatiyna

Do 6x 266 in your calculator that’s ur answer

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tiny-mole [99]

(x² + 16)(x² - 16)
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