How many permutations of a 7-digit phone number exist, assuming that numbers may be repeated and any number 0-9 may be used for any digit? A10 to the 7th power
B10!/3\!
C10!
D70

.mp4 files, because, video

other answer is correct. i had used the radius of the radius somehow. a website:

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.