If Mary read 2/5 of a page every minute, how long would she take to read 240 pages
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240
÷0.40
--------
600
So, 600 is the answer.
240 is to x minute
convert to fraction
(2/5)/1=240/x
multiply both sides by x
(2/5x)/1=240
2x/5=240
multipy both sides by 5 to get rid of fraction
2x=1200
divide by 2
x=600
600 minutes or 10 hours
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Manuel’s Crates
Crates
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Cost 25 45 65 85
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10, 20, 30, 40, 50...........
And a 2 digit number can be anything between 10 and 99.
To comment: Rodney would have 39 pieces of fruit.
When adding 10 to any two digit number, increase the left digit by 1. For example 20+10= 30. 55+10=65. If a problem says 10+ (a number), you can reverse the order the numbers are in because of the commutative property of addition. Example: 10+50 eqauls 50+10. Both equations equal 60. Also, Rodney would have 39 pieces of fruit since 20+19 is 39.
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It's a factor. This concept is widely used throughout algebra, and you'll probably bump into it through the end of high school and beyond.
A common use is expressing a term in prime factorization, or reducing a number to its most base parts- primes. For example:
Of course, a number like 13 which is already prime is made up of itself and 1. Factors do not have to be primes. 20 is also reducible through combinations of 1, 2, 4, 5, 10, and 20. Prime factorization is just a handy example.
Basically, factors multiply with each other to create other numbers, and numbers can be reduced down to their factors.
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1) 1+2+3+4=10 10/4(amount of #)=2.5
then, subtract the mean from each number in the data set.
2) 1-2.5= -1.5; 2-2.5= -0.5; 3-2.5= 0.5; 4-2.5= 1.5
convert all these numbers to positive, then add them together.
3)1.5 + 0.5 + 0.5 +1.5 = 4
divide the total by the amount of # in the data set
4/4=1
the MAD in this case is 1.
Hope i helped!! :)
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52/107= .486 so there’s a 48.6% that they are in 10th grade
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less than 5
therea er 1,2,3,4
4 number
total possible is 6 since 6 faces
probablity is 4/6=2/3