Answer:
see explanation
Step-by-step explanation:
the sequence is linear, that is arithmetic with nth term
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
given a₈ = 18 and a₁₂ = 26 , then
a₁ + 7d = 18 → (1)
a₁ + 11d = 26 → (2)
subtract (1) from (2) term by term to eliminate a₁
4d = 8 ( divide both sides by 4 )
d = 2
substitute d = 2 into (1) and solve for a₁
a₁ + 7(2) = 18
a₁ + 14 = 18 ( subtract 14 from both sides )
a₁ = 4
then
a₂₀ = 4 + (19 × 2) = 4 + 38 = 42
ANSWER
2x-3=0
and
x+4=0
EXPLANATION
Given that:
Then to find roots of
is the same as finding the roots of
By the zero product property, we must have either,
Hence the equations that must be solved to find the roots are:
2x-3=0
and
x+4=0
=(5x+4)°
=(2x-2)°
=(4x-6)°
we know that,
=+
According to the question,
so,
=(4x-6)°=(4×12-6)°=(48-6)°=42°
Answer:
A Irrational
Step-by-step explanation: