Answer:
x = 72 degrees
Step-by-step explanation:
Use the definition of a tangent function:
tan x = opposite/adjacent
= 154/50
= 3.08
----> x = arctan 3.08 = 72 degrees
Answer:
quadratic formula
Step-by-step explanation:
just accept it
Answer:
85
Step-by-step explanation:
Use the pythagorean theorem!
(think that is how you spell it )
Pythagorean theorem: a² + b² = c²
a and b are the numbers that you have in this example, c is the side you need!
75² + 40² = c²
5,625 + 1,600 = c²
7,225 = c²

(the square root and square cancel each other out)
85 = c
c = 85
Because it does ...............
Answer:
Common Difference:
The ninth term: -1
Step-by-step explanation:
The sequence can be written like this,
3, 2.5, 2, 1.5, 1, ....
Here the common difference is clearly -0.5 or
, and we can conclude that
number is
. So the 9th term is,
