Answer:
I'm pretty sure triangle 6 is similar to triangle 1
Step-by-step explanation:
You have 10 numbers to choose from, and you're choosing 4 from that pool. Order of the numbers matters, because having 1234 as a PIN is not the same having it be 1324, so we're counting the number of permutations of 10 digits taken 4 at a time. So there are

possible PINs that can be made.
5x+10+5x+10
10x+20
X=2
Please consider brainliest thanks
Answer:
7:5
Step-by-step explanation:
70 and 50 can be divided by 10
hope this helps you :)