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Art [367]
3 years ago
11

Help Me with this question please​

Mathematics
2 answers:
artcher [175]3 years ago
4 0

Answer:

22

Step-by-step explanation:

The abs of y is 29 because 29 is positive

51 - 29 = 22

yan [13]3 years ago
4 0

Answer:

80

Step-by-step explanation:

The lines on the outside of the number makes it absolute value, causing the number to become positive.

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Suppose I have an urn with 9 balls: 4 green, 3 yellow and 2 white ones. I draw a ball from the urn repeatedly with replacement.
Mrrafil [7]

Answer:

E(X_n)=\frac{2(n-1)}{27}

E(y)=\frac{14}{9}

Step-by-step explanation:

From the question we are told that:

Sample size n=9

Number of Green g=4

Number of yellow y=4

Number of white w=4

Probability of Green Followed by yellow P(GY) ball

 P(GY)=\frac{4}{9}*\frac{3}{9}

 P(GY)=\frac{4}{27}

Generally the equations for when n is even is mathematically given by

 Probability of success P(S)=\frac{4}{27}

 Probability of Failure P(F)=\frac{27-4}{27}

 Probability of Failure P(F)=\frac{23}{27}

Therefore

 E(X_n)=\frac{n}{2}*P

 E(X_n)=\frac{n}{2}*\frac{4}{27}

 E(X_n)=\frac{2n}{27}

Generally the equations for when n is odd is mathematically given by

 \frac{n-1}{2}

 E(X_n)=\frac{n-1}{2}*\frac{4}{27}

 E(X_n)=\frac{2(n-1)}{27}

b)

Probability of drawing white ball

 P(w)=\frac{2}{9}

Therefore

 E(w)=\frac{1}{p}

 E(w)=\frac{1}{\frac{2}{9}}

 E(w)=\frac{9}{2}

Therefore

 E(y)=[E(w)-1]\frac{4}{9}

 E(y)=[\frac{9}{2}-1]\frac{4}{9}

 E(y)=\frac{14}{9}

5 0
3 years ago
Write one word problem using arithmetic sequences and another using geometric sequences.
Levart [38]
Hey There!

If i got this down right,
An = A1 + (n - 1)d
Sn = A1 + A2 + A3 + ... + An
A1 is given by
Sn = n (A1 + An) / 2
For Example

An = A1 + (n - 1)d
= 6 + 3 (n - 1)
= 3 n + 3
n = 50

Hope This Helps!!!
5 0
3 years ago
Read 2 more answers
{(3,5),(-2,1),(4,3),(-1,4)} is each of these relation's a function?
marysya [2.9K]

Answer:

It is not a function.

Step-by-step explanation:

{(3,5),(-2,1),(<u>4</u>,3),(-1,<u>4</u>)}

A function is a special type of relation. In a function, no two ordered pairs have the same first  component.

This relation has two 4s.

4 0
2 years ago
State the postulate or theorem you would use to prove each pair of triangles congruent.
Diano4ka-milaya [45]

Answer:

  f) Not possible

Step-by-step explanation:

The triangles can be shown to be similar by SAS, but the corresponding sides are not marked as congruent. With the given information, it is not possible to show the triangles are congruent.

7 0
2 years ago
In a movie theater, there are children and adults in the ratio 4:7. If there are 21 adults, how many people total are there in t
lozanna [386]

Answer:

33

Step-by-step explanation:

7x3=21

4x3=12

21+12=33

8 0
3 years ago
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