18.52
If you write every number once, then you will write the number nine exactly once. If you mean "... the digit9, it should appear 20 times: 10 times in the ten's place, and 10 times in the one's place.
3n
6n + 7n (= 13n)
You answer it by multiplying each number time the bottom number
0.385
18.52
If you write every number once, then you will write the number nine exactly once. If you mean "... the digit9, it should appear 20 times: 10 times in the ten's place, and 10 times in the one's place.
Call the numbers 'A' and 'B'.Then write:5A = 6B
16x
3n
6n + 7n (= 13n)
You answer it by multiplying each number time the bottom number
125
6n - 3n which simplifies to 3n.
To write repeated multiplication in an exponential notation, you should write the number that has to be multiplied as the base. Count the number of times that the number is used.
7