Answer:
It is irrational
Step-by-step explanation:
Rational numbers do not have decimals.
Answer:

Step-by-step explanation:
Factorise the numerator and denominator
8a² - 2 ← factor out 2 from each term
= 2(4a² - 1) ← 4a² - 1 is a difference of squares
= 2(2a - 1)(2a + 1)
4a² + 4a + 1 ← is a perfect square
= (2a + 1)²
Thus

=
← cancel (2a + 1) on numerator/ denominator
= 
= 
Answer:
58.0 degrees
Step-by-step explanation:
Let the angle of depression be x.
tan x=104.1/65
x=58.0 degrees
Answer: 5/4
Step-by-step explanation:
To get the number of groups of 4/5 are in 1, we divide 1 by 4/5. This will give:
= 1 ÷ 4/5
= 1 × 5/4
= 5/4
<h3>There are 5/4 groups of 4/5 in 1.</h3>