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babymother [125]
3 years ago
9

Select the expression equal to

Mathematics
2 answers:
lys-0071 [83]3 years ago
6 0

Answer:

5\sqrt{3}

Step-by-step explanation:

\sqrt{75}

There is a perfect square of 25, so we remove it.

=\sqrt{25\times3}

Split the radical sign for both radicand.

=\sqrt{25}\times \sqrt{3}

Simplify the perfect square;

5\sqrt{3}

snow_lady [41]3 years ago
4 0

Answer:

i believe the answer is the 4th one. sorry, i cant figure out how to write it on computer...

75

3 x 25

3 x 5 x 5

3-/5 (i tried)

1. if there are an even number of the same number on the right side of the square root, then it just becomes one and stays on the right.

2. if theres just one of that number on the right side, then it goes on the left, because there isnt anything to match it.

3. if there is an odd number of the same number on the right side, then one goes on the left, and the rest follow the even rule (#1)

idk if that made sense, but its how my mind works. if you need a clear version, then dont be afraid to ask. ill try to clear it as simply as i can. :P

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For every 8 red pens on the teachers desk there are 12 pencils. If she has 60 writing implements, does she have enough red pens
gavmur [86]

Answer:No she does not

Step-by-step explanation:

8pens + 12pecils= 20writing inplements

20+8+12=40

20+8+12=60

You needed 3 sets of 8 pens and 3 sets of 12 pencils to get 60.

3*8=24

24 is less than 60, so she does not have enough pens for 60 students

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<span>SO, the train will be late 15 times in 100 days.

Hope i helped:P </span>
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