Caleb needs to create an 8-digit password using only numbets. how many different passwords are there if he wants to use 00 exactly once?

7x9^6 = 3720087 and I know how your friend got it

Step-by-step explanation:

if Caleb can put 00 anywhere that means that since there are 8 digits and 00 is 2 digits that means there are 7 different spots to put 00 giving you 7*x or 7 times any value. Because the 00 takes up two spaces, that means that they're are 6 digits left. hence 7*x^6 or 7 times any value to the sixth. In a numerical password they're are nine different digits to count up "123456789". So your friend did the 7 digits to put 00 times the "123456789" to the remaining spaces power. or 7x9^6.

I hope this helped pls give brainliest.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

b

step-by-step explanation:

the word superfluous means unnecessary