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Sunny_sXe [5.5K]
3 years ago
15

What is the least common multiple of 18 and 24 and 42

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
5 0
72 because you multiply the answers until you find the same number
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Find the sum of the given arithmetic series. 24 + 48 + 72 + 96 +...+ 480
Alja [10]

Answer:

5040

Step-by-step explanation:

The given series is :

24 + 48 + 72 + 96 +...+ 480

The first term, a= 24

Common difference, d = 24

The last term, a_n=480

Let there are n terms in the AP.

So,

a_n=a+(n-1)d\\\\480=24+(n-1)24\\\\480=24+24n-24\\\\n=20

There are 20 terms in the series. The sum of 20 terms is :

S_{20}=\dfrac{n}{2}(2a+(n-1)d))\\\\=\dfrac{20}{2}\times (2(24)+19(24))\\\\=5040

So, the sum of the given arithmetic series is equal to 5040.

8 0
3 years ago
Charley Davis is 1/4 as old as his father. The sum of their ages is 45. How old is each person?
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Answer:36 dad 9 charley

Step-by-step explanation:

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3 years ago
I don’t get this it’s hella confusing please help
Luda [366]
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2. Yes , Yes

3. No , No

4. No, Yes
3 0
2 years ago
Who’s good at algebra & can answer these with work??
AleksandrR [38]

Answer:

The answer to x2=25 is x=5

Step-by-step explanation:

When using factoring to solve this problem I just square rooted both numbers. The square root of x2 is x and the square root of 25 is 5. Sorry i couldn't help with all of them!

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3 years ago
A, B, and C are collinear. True or False?
Dafna1 [17]

Answer:

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Step-by-step explanation:

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