HELP ASAP WILL MARK AS BRAINLIST IF YOU SOLVE 2 OF THESE QUESTIONS

1. What base 10 number does 257 eight represent

2. A new operation, #, is defined this way: m#n=m^2-mn. Find the value of 7#(3#2).

Respuesta :

Answer:

1. 175

2. 28

Step-by-step explanation:

If you're converting from another base, just multiply each digit, then add up the numbers:

ones digit × 8^0,

tens digit × 8^1

hundreds × 8^2

see image.

The second problem gives you a new operation. Follow the rule by squaring the first number and taking away the first×second. Do the parenthesis first!

see image.

Ver imagen lpina68
Ver imagen lpina68