Answer:
(a) 
(b) nth term: 
Step-by-step explanation:
Solving (a)
Given
The first 3 terms.
When n = 1
When n = 2
When n = 3
So, the first three terms are:
Solving (b)
Given
Required
The nth term
The sequence is arithmetic.
So, first calculate the common difference (d)
The nth term is then calculated as:
Where
So:
and
Collect like terms
For similarity of triangles the measures of their corresponding sides should be proportional and measures of corresponding angles should be equal.
Answer:
15, inches, 7, inches
Step-by-step explanation:
44=2(8+l)+2l
44=16+4l
28=4l
7=l
l=7
w=8+7
w=15
Since 1/4 = 4/16, if each runner would be running 1/16 of a mile, you would need 4 runners to run the race.
Good job u got the answer right
