Answer:
60°
Step-by-step explanation:
In an equilateral triangle, the angles are also all equal. Since the sum of angles of a triangle is 180°, each of the angles is ...
(1/3)×180° = 60°
Answer:
18
Step-by-step explanation:
10 +3 =13 +5 =18
so that is how you get the answer 18 it's simple really
Answer:
a. 
Step-by-step explanation:
The given vector is v= 4i - 5j
The magnitude of this vector is;



The unit vector u in the direction of v is;



We rationalize to get

Answer:
2nd one
Step-by-step explanation:
as it is a negative number so the point on the number line should move backwards
Answer:
Perimeter= 49
area= 360
Step-by-step explanation:
perimeter means you need to add 40+9 and area means you must multiple the numbers.