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lara31 [8.8K]
3 years ago
13

Divide 18 in two parts so that sum of their reciprocals is 2/5

Mathematics
1 answer:
inn [45]3 years ago
4 0

Answer:

3.6

Step-by-step explanation:

I think that is the answer but im not 100 percent sure

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What is the quotient represented by the model?
Mama L [17]

Answer:

0.4

Step-by-step explanation:

If we count up all of the colored squares, we will get 28. And if we count the non-colored squares we will get 72.

Now, we take 28 and we divide it by 72. This will get us 0.3888888. That number rounded up is 0.4.

Hope this helps and if it does, don't be afraid to give my answer a "Thanks" and maybe a Brainliest if it's correct?  

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3 years ago
The local zoo has some kangaroos and some rabbits, There are 70 feet and 26 heads in total. How many kangaroos and how many rabb
prisoha [69]

Answer:

y=17

Step-by-step explanation:

4x+2y=70

x+y=26

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3 years ago
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A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 49.0 and 59.
yKpoI14uk [10]
To find the probability of the statistic class that it could be done at the period at 50.5 and 51.25 minutes and not their usual duration of 49 and 49 minutes so to get the probability you must subtract the time and would come up with 0.75 minutes and then divide it by 10 so the probability is 0.075
8 0
3 years ago
The sum of two numbers is 66. Two times the smaller number is 15 more than the larger number. What are the numbers? First one wi
Viktor [21]

Answer:

Larger number (y) is 39

Smaller number (x) = 66 - 39 = 27.

Step-by-step explanation:

Let the smaller number be<em> x</em> and the larger number be <em>y</em>.

Sum of two numbers = 66

According to question,

<em>x </em>+<em> y</em> = 66

<em>x</em> = 66 - <em>y</em>.........(1)

Now, since twice of smaller number is 15  more than the larger number, According to question,

2(smaller number) = larger number + 15

2<em>x</em> = <em>y</em> + 15 .........(2)

Now substituting the value of y from (1) in (2)

2 (66 - <em>y</em>) = <em>y</em> + 15

132 - 2<em>y</em> =<em> y </em>+ 15

-2<em>y - y</em> = -132 + 15

3<em>y </em>= 117

<em>y</em> = 117/3 = 39

So the largest number (y) is 39

Smaller number (x) = 66 - 39 = 27.

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4 years ago
The number of students in the 8 schools in a district are given below(Note that these are already ordered from least to greatest
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