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Sergeu [11.5K]
3 years ago
13

Which number is an irrational number?

Mathematics
1 answer:
EastWind [94]3 years ago
5 0
The answer is d. it isn’t an exact number
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I really need help urgently!!! Geometry!
Naddik [55]
Both triangles are similar because 2 angles are same, only difference is in size.
similarity theorem - 2 angles of one triangle are congruent to 2 angles of another triangle, corresponding sides are in proportional.

24/ 3x+6 = 32/28
24 x 28 = 32 (3x+6)
x = 5

3 0
3 years ago
Solve for x <br> 9(x - 2)=18
SVETLANKA909090 [29]

Answer:

x = 4

Step-by-step explanation:

9(x - 2) = 18

9 * x = 9x

9 * -2 = -18

9x - 18 = 18

+18         +18

9x - 18 + 18 = 9x

18 + 18 = 36

9x = 36

----   -----

9      9

9x/9 = x

36/9 = 4

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5 0
4 years ago
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Sort each description of data into the appropriate category.
Alex787 [66]

Answer:

Step-by-step explanation:

Qualitative:

Eye colour

Grade level

favourite music group

Quantitive:

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6 0
3 years ago
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Suppose in a society where there are equal numbers of men and women. There is a 50% chance for each child that a couple gives bi
jeka57 [31]

Answer:

eventually the gender ratio of population in this society will be 50% male and 50% female.

Step-by-step explanation:

For practical purposes we will think that every couple is healthy enough to give birth as much children needed until giving birth a girl.

As the problem states, "each couple continue to have more children until they get a girl and once they have a girl they will stop having more children". Then, every couple will have one and only one girl.

  1. This girl would be the n-th child with a probability (0.5)^n.

We will denote for P(Bₙ) the probability of a couple to have exactly n boys.

Observe that statement 1 implies that:

P(B_{n-1})=(0.5)^{n}.

Then, the average number of boys per couple is given by

\sum^{\infty}_{n=1}(n-1)P(B_{n-1})=\sum^{\infty}_{n=1}(n-1)(\frac{1}{2} )^n=\sum^{\infty}_{n=2}n(\frac{1}{2} )^n=\\\\=\sum^{\infty}_{m=2}\sum^{\infty}_{n=m}(\frac{1}{2} )^n=\sum^{\infty}_{m=2}(\frac{1}{2} )^{m-1}=\sum^{\infty}_{m=1}(\frac{1}{2} )^{m}=1.\\

This means that in average every couple has a boy and a girl. Then eventually the gender ratio of population in this society will be 50% male and 50% female.

3 0
4 years ago
Plzzzzzzzzzzzzzzzzzzzzzzzzzz help me
bija089 [108]

Answer:

2 and 5 are

Step-by-step explanation:

since 3h and -h can be combined to be 2h they are like terms

since 5 has the same exponents and letters(i forget what the proper term is) they are like terms

5 0
3 years ago
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