I'd be happy to help if I knew what you needed help on!!
Answer:
900 - 135 = 765
Step-by-step explanation:
Question 1 Answer: 1cm= 3 feet. I say this because if there is 5 cm on the blueprint, you can do 3 feet for every cm and get 15 feet.
Question 2 Answer: 1 in=1.5 feet. 6÷4= 1.5 therefore the scale factor is 1.5
I can't quite see the other answers if you could zoom in i could answer those as well.
Answer:
64.
Step-by-step explanation:
There are 8 digits in the list.
This will be the number of permutations of 2 from 8 plus the duplicate numbers 11, 22 etc.
So we have 8P2 + 8 possibilities.
= 8! / (8-2)! + 8
= 56 + 8
= 64.
