9514 1404 393
Answer:
20
Step-by-step explanation:
4 and 5 have no common factors*, so their least common multiple is their product:
4 × 5 = 20
The LCM of 4 and 5 is 20.
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* We're concerned with integer factors greater than 1. Of course, 1 is a factor of everything, We could say this as "no common prime factors". For computing the LCM, we really want the GCF (greatest common factor) for use in the formula ...
LCM(m, n) = mn/GCF(m, n)
I think if you do 0.25 Subtract 7.5 then you will get you answer then you can multiply the answer you have with the number 0.25 and see if yo can get 7.5
Answer:
Step-by-step explanation:
5x - 8 = 16 -3x
8x - 8 = 16
8x = 24
x = 3
AC= 5(3) - 8 = 15 - 8 = 7
CD= 16 - 3(3) = 16 -9 = 7
7 + 7 = 14 = AD
The first seat can be any one of the 4 people.
For each of those . . .
The second seat can be any one of the remaining 3 people.
For each of those . . .
The third seat can be either one of the remaining 2 people.
For each of those . . .
The fourth seat is the last remaining person.
Total number of possible ways to line them up = (4 x 3 x 2 x 1) = 24 ways.