Can some one do these two i will put 20 pts
what is the gcf of 8 and 32?
2
4
8
32
what is the lcm of 20 and 40?
5
10
20
40

gcf = 8  lcm= 5

gcf means greatest common facter.  8 goes into 8 1 time and 32 4 times. therefor 8 is the gcf.  lcm means least common multiple. and 5 is the lowest number that goes into 20 and 40

For the first question, the right answer is 8.

for the second question, the right answer is 40

Step-by-step explanation:

First of all, we need to find the GCF of 8 and 32, for that we need to find the factors of 8 and 32

Factors of 8 are:

8=1, 2, 4, 8.

Factors of 32 are=

32= 1, 2, 4, 8, 16, 32

we can see that 1, 2, 4 and 8 are factors for the two numbers, but 8 is the greatest of these numbers, so the greatest common factor for 8 and 40 is 8.

Now we just need to find the LCM of 20 and 40 we need to find their multiples

Multiples of 20=

20: 20, 40, 60, 80, 100, 120

Multiples of 40=

40: 40,80, 120, 160, 200

We can see that 40, 80 and 120 are common multiples but the lowest one is the LCM

So the LCM of 20 and 40 is 40

the answer is 26... just divide!