It would be the arrow pointing left
Answer:
A = 60° , B = 30°
Step-by-step explanation:



Answer: 
Step-by-step explanation:
Given: The first term of Geometric series : a=1
The seconds term of Geometric series : 
The common ratio between the terms is given by :-

We know that the sum of infinite geometric series is given by :-

Hence, the sum of the given infinite series = 
Answer:
x = 5
Step-by-step explanation:
The area (A) o a rectangle is calculated as
A = lb ( l is length and b the breadth ), thus
x² + x - 12 ×
= 126 ← factor the quadratic
(x + 4)(x - 3) ×
= 126 ← cancel the common factor (x - 3)
(x + 4)(x + 9) = 126 ← expand factors using FOIL
x² + 13x + 36 = 126 ( subtract 126 from both sides )
x² + 13x - 90 = 0 ← in standard form
(x + 18)(x - 5) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 18 = 0 ⇒ x = - 18
x - 5 = 0 ⇒ x = 5
However x > 0 ⇒ x = 5