1. the blood types of 150 people were determined for a
study as shown in the figure below.
67
62
number of people
6
a b ab
blood type
if 1 person from this study is randomly selected, what
is the probability that this person has either type a or
type ab blood?

I think is 3/6 be cause there is 3 types of blood type which represent the numerator and 6 people representing the denominator 6

jus to clarafy I think I'm not sure

hope it helps

Step-by-step explanation:

Use triangle congruency:

BC=EC, AC=DC - Given

m∠DCE = m∠ACB because they are vertical angles

Therefore ΔABC ≅ ΔDEC because of Side-Angle-Side congruency

AB=DE because corresponding parts of congruent triangles are also congruent (CPCTC)