Laws of exponents:
(a^x)^y=a^(xy)
a^0=1 (a≠0)
Therefore
(7^13)^3.7^0
=(7^(13*3)). 1
=7^39
Dy/dx = -y inx iny
(y in x in y) dx + dy = 0
(y in x in y ) dx = - dy
(in x )dx = - (1/ y in y) dy
you just need to integrate both sides
Hope this helps
Answer:
−x4+5x3−3x2−14x+40
Step-by-step explanation:
The number of pages the student can read in a minute is an illustration of rates.
The time left to complete the whole book is 90 minutes
From the complete question, the student's rate is:

The number of pages is:

First, we calculate the time to read the whole book



The number of the student has read is:

Next, we calculate the time spent on the 25 pages



Convert to minutes

So, the time left is:

This gives


Convert to minutes

Hence, the time left is 90 minutes
Read more about rates at:
brainly.com/question/18065083
Answer:
2(x-9)(x+5)
Step-by-step explanation: