Answer:
10 m
Step-by-step explanation:
Since all of the side lengths of a regular octagon are equal and there are 8 sides on an octagon, the answer would be 80 / 8 = 10 m.
Answer:
I love Spanish food said Jim
I'm going to Singapore next month said Emily
Answer:
Step-by-step explanation:

Answer:
Therefore my account balance will be in 10 year=$6,750
Step-by-step explanation:
Simple interest: Simple interest is calculated on the same principal each year.

I= simple interest.
r = rate of interest per annum.
t= time
Compound interest: The principal is not same each year. The principal will change from the second year.
The principal of 2nd year = Principal+ interest of 1st year.
The principal of 3rd year = Principal of 2nd year+ interest of 2nd year.
and so on
The Amount 
Here P= $5,000
r=3.5%
and t=10 years

=$1750
Therefore my account balance will be in 10 year=$(5,000+1750)=$6,750.
For the average to be 90,
(99 + 93 + x) / 3 = 90
or 192 + x = 270
or x = 270 - 192 = 78
Jim must score at least 78 in the third test.