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Blababa [14]
3 years ago
11

HELP PLEASE!! i’ll give brainliest for this easy question

Mathematics
1 answer:
Delicious77 [7]3 years ago
5 0

Answer:

I think this is a high school problem in in 5th grade TnT

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PLEASE HELP ASAP I always give brainliests!
nlexa [21]

first to find average age add all the ages divide by number of ages 4

5+4=9

9+6=15

15+39=54

54/4=13.5

For standard deviation find the mean/average

13.5

then subtract the mean from each number/age

5-13.5=-8.5

4-13.5=-9.5

6-13.5=-7.5

39-13.5=25.5

then square each number

-8.5^2=-72.25

-9.5^2=-90.25

-7.5^2=-56.25

25.5^2=650.25

then find the mean/average of the new numbers

-72.25+-90.25+-56.25+650.25=431.5

431.5/4=107.85

then take the square root of the new mean/average

\sqrt{ 107.875}\\10.38628903...

7 0
3 years ago
A chef planning for a large banquet thinks that 2 out of every 5 dinner guest will order his soup appetizer he expects 800 guest
Masteriza [31]

Answer:

320 cups of soup

Step-by-step explanation:

2/5= x/800

2/5 =.04  

800*.04 =320       x=320

2/5 = 320/800

2/5 =0.4  is equivalent to 320/800=0.4

6 0
4 years ago
Can someone please help me with this I can’t figure this out for the life of me!!
olga nikolaevna [1]

Answer: 278.4

Step-by-step explanation: What I did was I divided 1392 by 5. Now the reason I used "1392" rather than "1395" is because it asked for the amount of adult tickets, so I subtracted children ticket from total amount and got 1392 then divided it by 5 and ended up with 2

4 0
3 years ago
Read 2 more answers
Suppose a and b are independent events if p(a/b)=.25 and p(b)=.6 what is P(AnB)?
Talja [164]

Answer:

0.15

Step-by-step explanation:

<u>Independent Probabilities Formula</u>

P(A | B) = P(A) = P(A ∩ B) ÷ P(B)

P(A | B) = 0.25

P(A) = 0.25

P(B) = 0.6

If P(A) = P(A ∩ B) ÷ P(B)

P(A ∩ B) = P(A) × P(B)

P(A ∩ B) = 0.25 × 0.6

P(A ∩ B) = 0.15

4 0
3 years ago
3x+4xy=4<br> solve for x
dangina [55]

3x+4xy=4

Factor our variable x

x(4y+3)=4

Divide both sides by 4y+3

x(4y+3)/4y+3= 4/4y+3

x= 4/4y+3


I hope that's help !


7 0
3 years ago
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