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bearhunter [10]
3 years ago
7

Find the least common denominator (LCD) of 1/20 and 11/30

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
5 0

Answer:

60

Step-by-step explanation:

To find the LCD, all you have to do is find the least common multiple (LCM) of the two denominators.

The fractions are already reduced, so you have to find the LCM of 20 and 30. The LCM of 20 and 30 is 60.

<u>To find the LCM:</u>

20 and 30 are easy numbers, so you can just list the multiples out.

20: 20, 40, 60, etc.

30: 30, 60

The lists both have 60, so the LCM is 60.

Another way is to prime factorize the two numbers.

20: 2^2*5

30: 2*3*5

Then, take the non-repeating factor from the second number (3) and multiply that by 30, which is 60.

Mrrafil [7]3 years ago
3 0

Answer:

60

Step-by-step explanation:

LCD(1 /20 , 11 /30) = LCM(20, 30) = 22×3×5 = 60

1 /20 = 3 /60

11 /30  = 22 /60

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Carolyn flips a coin 20 times and writes down the results of each flip. Is this event independent or dependent? Explain.
Alex

Answer:

Dep

Step-by-step explanation:

I guess Dep., Because Depending on which side it lands Is the outcome.

8 0
3 years ago
Huda made 8 matching bracelets. She used 128 beads in all. How many beads did she use per bracelet?
Elden [556K]

Answer:

To figure out the answer all you have to do is divide 128 by 8 and you get:

16 beads per bracelet


Hope this helped and plz mark as brainliest!


8 0
3 years ago
What is the value of x? How do you set up to solve?
nlexa [21]

Answer:

3x-22=80+x

3x-x=80+22

2x=102

x=51

Step-by-step explanation:

the exterior angle is (3x-22) and then is equal to sum of 80 and x

and then we get 51

6 0
2 years ago
Read 2 more answers
Percy solved the equation x2 + 7x + 12 = 12. His work is shown below. Is Percy correct? Explain.
antoniya [11.8K]
= > x² + 7x + 12 = 12

= > x² + ( 4 + 3 )x + 12 = 12

= > x² + 4x + 3x + 12 = 12

= > x( x + 4 ) + 3( x + 4 ) = 12

= > ( x + 4 ) ( x + 3 ) = 12


Percy did correct till this step. But by doing like this, Percy can't get the values of the variable x.



Percy should follow the following steps :

= > x² + 7x + 12 = 12


Add -12 on both sides,


= > x² + 7x + 12 - 12 = 12 - 12

= > x² + 7x = 0

= > x( x + 7 ) = 0

= > ( x = 0 ) or ( x + 7 = 0 )

= > ( x = 0 ) or ( x = - 7 )



Hence, required value(s) of x is 0 or -7
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8 0
3 years ago
Read 2 more answers
Which expression is equivalent to -51 - (-60)?
iVinArrow [24]
I believe the answer is -51+60 because it equals -9. And -51-(-60) is 9.
3 0
3 years ago
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