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Cloud [144]
3 years ago
8

A stack of 20 cards is numbered 1 through 20. One card is selected at random. What is the probability that the card is less than

8?
Mathematics
1 answer:
kvasek [131]3 years ago
5 0

Answer:

40%

Step-by-step explanation:

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Help please. thank u :)
Sveta_85 [38]

Answer:

help

Step-by-step explanation:

5 0
3 years ago
A customer purchased a total of 16 washcloths and towels. Each washcloth cost $10.50 and each towel cost $15.00. The customer sp
IgorC [24]

Answer:

3

Step-by-step explanation:

10.50 x 3 = 31.5

15 x 13 = 195

195 + 31.5 = 226.50

8 0
2 years ago
Determine the standard variation of the data below. (1, 2, 3, 4, 5)
Ne4ueva [31]
Calculate for the mean/ average of the given numbers:
 
                             μ = (1 + 2 + 3 + 4 + 5) / 5 = 3

Then, we calculate for the summation of the squares of differences of these numbers from the mean, S
 
                             S  = (1 - 3)² + (2 - 3)² + (3 - 3)² + (4 - 3)² + (5 - 3)²
                                S = 10

Divide this summation by the number of items and take the square root of the result to get the standard deviation.

                              SD = sqrt (10 / 5) = sqrt 2  
                                    SD = 1.41

Thus, the standard deviation of the given is equal to 1.41. 
              
                            
8 0
3 years ago
Read 2 more answers
A one pound bag of skittles contains 300 pieces of which 28% are red. How many skittles were red?
lesantik [10]

Answer:84

Step-by-step explanation:

3 0
2 years ago
Amelia claims that if she doubles the length and width of the base of a rectangular prism and triples the height, she has increa
julia-pushkina [17]

Answer:

Step-by-step explanation:

(2L)(2W)(3H) = 12LWH.

Amelia gets it.

3 0
3 years ago
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