Answer:
why it in pink and ur supposed too x them then divide
To solve the problem we must know the Basic Rules of Exponentiation.
<h2>Basic Rules of Exponentiation</h2>
The solution of the expression is
.
<h2>Explanation</h2>
Given to us
Solution
We know that 16 can be reduced to
,

Using identity
,

Using identity
,
Solving further

Using identity
,


Hence, the solution of the expression is
.
Learn more about Exponentiation:
brainly.com/question/2193820
Answer:
x = 18
Step-by-step explanation:
the sum of any exterior angle is equal to the sum of any two interior angles
3x-11 + 5x+14 = 9x-15
8x + 3 = 9x - 15
3 = x - 15
x = 18
Answer:
All polygons have straight lines
Step-by-step explanation:
R = speed in still water
r + c = speed with current
r - c = speed against current
3.5(r + c) = 70
r + c = 20
c = 20 - r
4(r + c) = distance from pier to pier
5(r - c) = distance from pier to pier
4(r + c) = 5(r - c)
4(r + 20 - r) = 5(r - 20 + r)
80 = 10r - 100
180 = 10r
18 = r
The speed in still water is 18 km/hour