Answer:
5120
Step-by-step explanation:
....80,160,320.... 2560
You are multiplying by 2 each time.
3.75 meters I would presume.
Explanation: since a single meter casts a shadow of 0.75 meters that means for each meter, 0.25 meters are missing. So I added 0.75 to three, because there was 3 meters and 3 time 0.25 was 0.75 .
Answer:

Step-by-step explanation:





Answer: 7 x 2 x 2 x 2
Step-by-step explanation:
So 7x8 = 56; 7 is prime, but 8 can be factored further; 8 = 4x2, but the 4 can be factored; 2x2
So now you have the prime factorization of 56= 7 x 2 x 2 x 2
So to find x, you have to add both A and B which is 38. Since AuB (excluding the overlap) is 29, subtract 38 from 29 and you get 9 for x.