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attashe74 [19]
3 years ago
15

Dean has two eletric train sets A and B.each train is on its own circular track he starts both trains at the same time train a r

eturns to its start point every 12 seconds train b returns every 9 seconds what is the least amount of time in seconds both trains will arive at the same time
Mathematics
2 answers:
strojnjashka [21]3 years ago
6 0
I believe what the person above said is correct, im just getting points!
kicyunya [14]3 years ago
4 0

Answer:

36

Step-by-step explanation:

you have to find the LCM of 12 and 9 which is 36. :/

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STatiana [176]

The process is:

C = 2nr

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or maybe this one

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koban [17]

Answer:

7.5

Step-by-step explanation:

Using pythagoras theorem

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3 years ago
Which of the following pairs of numbers has a GCF of 1? 30 and 70 24 and 44 12 and 30 16 and 21
stiv31 [10]
Must be 16 and 21 because we can see

30 and 70 has 10 as factor
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What is the domain of the function y= square root x - 5 - 1
IrinaK [193]

Answer:

x\geq 5

Step-by-step explanation:

The function that we have to study in this problem is

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The domain of a function is defined as the set of all the possible values of x that the function can take.

For a square-root function, there are some limitations to the possible value of the argument in the root.

In particular, the argument of a square root must be equal or greater than zero, because the square root of a negative number is not defined.

Therefore, in this case, we have to set the following condition for the domain:

x-5\geq 0

And by solving, we get

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