817jmanswers

=Question 1= = = =Mean= 6=to get the mean 7 + 4 + 5 + 8 + 7 + 10 + 1 = 42 (sum of all data) 42 / 7 = 6 sum of all data / total numbers in set = mean

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=Median= 7= to get Median 7, 4, 5 , 8 , 7 ,10 ,1 Arrange in numerical order 1, 4, 5, 7, 7, 8, 10 find the middle number = 7

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=Mode= 7= to get Mode 7, 4, 5 , 8 , 7 ,10 ,1 arrange in numerical order (this will make it easier to find the most number seen in the data set) 1, 4, 5, 7, 7, 8, 10 The number you see most = 7

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=Question 2= The square root of 45 is 6 and 9/13 to get the square root of 45 without a calculator 1) find the nearest perfect squares on either side of the number. 36 and 49 2) 36's factors are 6 x 6 and 49's factors are 7 x 7 meaning the square root of 45 is in between the factors 6 and 7 3) since the square root of 45 is between 6 and 7, we subtract 45 by the lower perfect square which is 36. You'd get 9. 4) you subtract the larger perfect square 49 by the lower perfect square which is 36 in this matter. Which is 13 5) you make it a fraction = 9 / 13.... so... the square root of 45 is 6 and 9 / 13

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=Question 3= no, because...

taking 15% off an item
example: 15% of $20 = $17 20 / 100 =0.2 x 15= $3 so... $20 - $3 = $17

AND AN ADDITIONAL 10% OFF THE REDUCED PRICE WHICH IS $17 in this matter
example: 10% of $17 = $15.30 17 / 100 =0.17 x 10= $1.7 so... $17 - $1.7 = $15.30

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Taking 25% of an item
example: 25% of $20 = 15 20 / 100 =0.2 x 25= $5 so... $20 - $5 = $15

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So that means taking off ONLY 25% is better than taking 15% off then an additional 10% off the reduced price.

=Question 4= Jacob has a record of winning 2 boxing matches for every 4 he loses, If he had 32 matches during the last year, how many did he win?

media type="custom" key="28058" if jacob had 32 matches during the last year... he won 16.

=Question 5=

A child can run 10 blocks in 5 minutes. How long does it take the child to run 7 blocks, at the same speed?

media type="custom" key="28060" it would take the child 3.5 minutes to run 7 blocks.