Step-by-step explanation:
tan x =opp/adj
x = tan-¹(8/20)
x =21.8 degree
but you are asked to find the angle of elevation so
angle of elevation + 21.8 + 90 = 180 degree .... basic rule of triangle
angle of elevation=180-90-21.8
angle of elevation=68.2 degree
Answer:
ummmmm illl ask my friend
Answer:
6
Step-by-step explanation:
Let . We know the formula for the sum of an arithmetic sequence is:
Where n is the number term you are finding the sum up to, a1 is the first term, and an is the nth term. We can substitute what we have:
The formula to find the nth term of an arithmetic series is:
Where d is the common difference. Again, we can plug in what we have;
Answer:
N- 8 is the answer because n decreases by 8
Answer: The equation to find Number of grand seats, s are either of the following
x+ s= Total seats
x+s= 19,000
5000+s= 19,000
Number of grand seats, s= 14,000
Step-by-step explanation:
Step 1
A stadium had a total of 19,000 seats.
Given that field seats=5,500
And the rest which are grandstand seats=?
Let field seats be represented as x and grand seats be represented as s
such that the total number of seats can be expressed as
x+ s = Total seats
x+ s= 19,000-------- Equation.
5000+s= 19,000
Step 2
Such that given field seats, x= 5000, Number of grand seats will now be
x + s= 19,000
5000 + s= 19,000
s= 19,000-5000
=14,000 seats