3 years ago

- Alisha had 3/4 yards of ribbon. She wanted to use it to decorate

Mathematics

1 answer:

Pachacha [2.7K]3 years ago

4 0

Answer:

1/4 yards

Step-by-step explanation:

3/4 is the total. Divide the total by 3 to get the answer.

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What is the standard deviation of the following data set rounded to the nearest tenth? 56 ,78 ,123 , 34, 67, 91, 20

quester [9]

Answer:

The standard deviation of the following data set is 32.2

Step-by-step explanation:

step 1

Find the mean

we have

$[56,78,123,34,67,9,20]$

Sum the data and divided by the number of elements

$[56+78+123+34+67+91+20]/7=469/7=67$

step 2

For each number: subtract the Mean and square the result

$[(56-67)^{2},(78-67)^{2},(123-67)^{2},(34-67)^{2},(67-67)^{2},(91-67)^{2},(20-67)^{2}]$

$[121,121,3,136,1,089,0,576,2,209]$

step 3

Work out the mean of those squared differences

$[121+121+3,136+1,089+0+576+2,209]/7=1,036$

This value is called the "Variance"

step 4

Take the square root of the variance

$standard\ deviation=\sqrt{1,036}=32.2$

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What metric unit would be used to measure a baseball bat

Ber [7]

Use feet to measure the baseball bat hope this helps

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The amount Denise charges to repair computers is $50 an hour plus a $25 service fee. Write an expression to show how much she wi

k0ka [10]

The expression is

50h+25

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What is the shortest distance 0.714 meter or 0.224 meter

svp [43]

0.224 would be the correct answer

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What us the median temperature for the data shown in the table?

maxonik [38]

Answer:

27.3

Step-by-step explanation:

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