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Ludmilka [50]
3 years ago
12

Find the least common denominator of 1/5 and 3/10?

Mathematics
2 answers:
olchik [2.2K]3 years ago
6 0

Answer:

20 would be the lowest that both 10 and 5 could go into, and that would make the fractions 4/20 and 6/20.

liubo4ka [24]3 years ago
4 0

Answer:

10

Step-by-step explanation:

We need to find the lowest common multiple of teh 2 denominator:

So first let's write the first few multiples of 5:

5,10,15,20,25

Now let's write the first few multiples of 10:

10,20,30,40,50

Since 10 is the first number that appears in both lists this is our answer

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Ef is the median of trapezoid abcd (please explain the answer im so confused lol)
Art [367]

Step-by-step explanation:

Okay, so...

The Median of a trapezoid is directly in the middle. For some weird mathimatical reason you won't ever need to know unless it's on an exam or you become a math major, its midsegment is the average of the top length and the bottom length.

In other words,

EF = ( BC + AD ) / 2

So for part 1, we can use that equation to find x.

EF = ( BC + AD ) / 2

  • Insert known equations.

4x-18=[(x+12)+(3x-4)]/2

  • Simplify within parentheses.

4x-18=[x+12+3x-4]/2

4x-18=[x+3x+12-4]/2

  • Add.

4x-18=[4x+8]/2

  • Divide.

4x-18=2x+4

  • Simplify.

(4x-2x) +(-18+18)=(2x-2x)+(4+18)

2x=22

  • Divide both sides by 2.

x=11

Part 2 is a lot easier now. All we have to do is plug in 11 for x.

BC =x+12

BC = 11+12

BC = 23

-

AD = 4x-18

AD = 4(11)-18

AD = 44-18

AD = 26

-

EF = 3x-4

EF = 3(11)-4

EF = 33-4

EF = 29

Answer:

Part I: x = 11

Part II:

  • BC = 23
  • AD = 26
  • EF = 29
4 0
3 years ago
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