Use pythagorean theorem to solve #1

15

Step-by-step explanation: a^2 + b^2 = c^2 this is what is called the Pythagorean Theorem which means you square the two legs and then add them in this case 9 squared is 81 and 12 squared is 144 notice that when you add 144 + 81 = 225 now we just have to find the square root of 225 which is 15 because 15 times 15 is 225 so the answer is 15

hope this helps mark me brainliest if you can

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

the aswere is the one with all 8's and the second one is with the 10,8 and 6

step-by-step explanation: