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Vinil7 [7]
3 years ago
5

the cost of two sound systems were decreased by 10 the orginal cost of the systems were 90 dollars and 60 dollars which had a gr

eater percent of decrease
Mathematics
1 answer:
Alex Ar [27]3 years ago
3 0
I would say 60 cause 10% of 90 is 9 which is a difference of 81 while 10% of 60 is 6 which is a difference of 54. 
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In 2012, Red Rose tea randomly began placing 1 of 12 English porcelain miniature figurines in a l00-bag box of the tea, selectin
Mandarinka [93]

Answer:

n = 144 bags

Step-by-step explanation:

Given:-

- English porcelain miniature figurines in total = 12

- 1 figurine is to be placed in a 100-bag box

Find:-

On the average, how many boxes of tea must be pur-chased by a customer to obtain a complete collection consisting of the 12 nautical figurines?

Solution:-

- We will denote a random variable (X) as the number of figurines in (n) number of bags purchased.

- The probability (p) of finding a figurine in a single bag is ( success ):

                                 p = 1 / 12

- The random variable (X) can follow a binomial distribution with parameters n = number of bags purchased, and p = probability of selecting a bag with a figurine.

                                X ~ B ( n , 1/12 )

- The average number of bag "n" that need to be purchased to find all 12 figurines available:

                               E ( X ) = 12

                               n*p = 12

                               n = 12 / p

                               n = 12 / ( 1 / 12) = 12^2

                               n = 144 bags

- A total of average n = 144 bags need to be purchased to find all the 12 figurines.

6 0
3 years ago
What is the mean of the values in the stem-and-leaf plot into your answer in the Box​
mezya [45]

Answer:

Step-by-step explanation:

you need more information bu the stem-leaf is meant to split the number

4 0
3 years ago
Use the diagram. Solve for p.
Vinvika [58]

Answer:

4

Step-by-step explanation:

WY=WX+XY

28=12+4p

28-12=4p

16=4p

16/4=p

4=p

5 0
3 years ago
Read 2 more answers
Help help help, please
erastovalidia [21]

Answer:

36. m^7

37. x^3 y

38. 6v^5

Step-by-step explanation:

Divide the exponents by the number in the radical sign,

so, If no number is given then divide exponents by 2 eg. question 38

<h3>Explanation </h3>

36. 7√m^49 means m^(49/7) = m^7

37. 3√x^9y^3 means x^(9/3) y^(3/3) = x^3 y

38. √36v^10 means (√36) v^(10/2) = 6v^5 (√36 = 6)

6 0
2 years ago
Read 2 more answers
2m-13=-8m+27 <br><br><br> Please answer!!
LiRa [457]
Let's solve your equation step-by-step.2m−13=−8m+27
Step 1: Add 8m to both sides.2m−13+8m=−8m+27+8m10m−13=27
Step 2: Add 13 to both sides.10m−13+13=27+1310m=40
Step 3: Divide both sides by 10.10m10=4010m=4
Answer:<span>m=4</span>
5 0
3 years ago
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