The rule for multiplying similar bases with exponents is:
(a^b)*(a^c)=a^(b+c)
In this case you have:
(x^9)(x^2)
x^(9+2)
x^11
https://www.wolframalpha.com/
Answer:
N= 9/2
Step-by-step explanation:
Every 10 minutes of reading my book, I read 20 pages each. // part B you read 0.5 minutes per page
3x - 8 = 2x + 15
Add 8 to both sides
3x = 2x + 23
Subtract 2x from both sides
x = 23