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Alex787 [66]
2 years ago
9

Eight rolls of paper towels cost $4.80. At the same unit rate, how much will six rolls of paper towels cost?

Mathematics
2 answers:
Gala2k [10]2 years ago
6 0

Answer:

six rolls will cost $3.60

Step-by-step explanation:

unit rate is $0.60 per roll and you multiply that by 6

julia-pushkina [17]2 years ago
3 0

Answer:

$28.80

Step-by-step explanation:

4.80 x 6 = 28.8

Hope this helped!

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A(n) __________ is the simplest function of its type.
larisa [96]

Answer: Basic Function

Step-by-step explanation: Why Basic Function is the simplest function type because then you can do functional things more similar and easier

6 0
2 years ago
Find the mean absolute deviation of each set of data. Round your answer to two decimal places. Did I do this correctly
melomori [17]

Answer:

3,1,5,4,8,6 is 1.83 for mean absolute deviation

Step-by-step explanation:

7 0
3 years ago
A researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample
suter [353]

Answer:

The expected frequency for the cell E2,2 is = 33

Step-by-step explanation:

The given data is

Gender               | 0-30| 30-60| 60-90| 90+       Totals

Male                    | 23    |    35   |   76    |  46        180

<u> Female               |   31   |    42   |   46    |  16         135    </u>

<u>Totals                    54         77        122    62          315  </u>

<u />

The expected frequency for the cell E2,2 is :

Expected for the (30-60 box for females)   =  Total of (30-6)/ (total )* females

                                                                      = ( 77/315)135= 33

Here p= 77/315 and n= 135

therefor X= pn = 33

χ²=  (33-42)²/33= 2.455  ( for the single value of E2,2=33)

Expected for the (30-60 box for males)   =  Total of (30-6)/ (total )* males

                                                                      = ( 77/315)180= 44

χ²=  (44-42)²/44= 0.09

The critical region is  χ² (0.05) 3 ≥  χ²= 11.34

Let the null and alternate hypothesis be

H0:the number of minutes spent online per day is not related to gender

against

Ha: the number of minutes spent online per day is related to gender

The single value of χ² for E2,2 = 2.45 is less than the critical value of 11.34.  

6 0
2 years ago
A baker used 3/16 cup of sugar. Then she used another 1/2 cup of sugar. How much sugar did she use in all?
Fittoniya [83]

Answer:

11/16 :)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
According to the WHO report, girls who are 2-years old have a mean head circumference of 47.18cm with a standard deviation of 1.
Verdich [7]

Answer:

1. z = -1.91429

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. 2.7792%

Step-by-step explanation:

1. Relative to the WHO data, what is this girls z-score?

z score formula is:

z = (x-μ)/σ, where

x is the raw score = 44.5 cm

μ is the population mean = 47.18cm

σ is the population standard deviation = 1.40cm

z = 44.5 - 47.18/1.40

z = -1.91429

What does the z score tell us?

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. Using the WHO data in a normal model, what percentage of the girls has a head circumference that is smaller than the girl with Down's Syndrome?

z score = -1.91429

Probability value from Z-Table:

P(z =-1.91429) = P(x<44.5) = 0.027792

Converting to percentage = 0.027792 × 100

= 2.7792%

6 0
2 years ago
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