Answer:
115°
Step-by-step explanation:
Knowing that the sum of all interior angles of any triangle is 180 degrees, we can find the measurement of the missing angle of the triangle. The calculation is 180 - 75 - 40 = 65. Then, notice that the blue angle and the missing angle are supplementary (linear; add up to 180 degrees). So we can find the blue angle's measurement by 180 - 65, so the answer is 115 degrees.
The correct answer is:
[B]: "

" .
__________________________________________________________Consider choice [A]: 
;
=

;
= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [A]" .
__________________________________________________________Consider choice [B]: 
;
=

;
= "-2" ; Yes!
→ Let us proceed with the final answer choice ;
__________________________________________________________Consider choice [C]:

;
=

;
= 2 ; "2 ≠ -2" ; so we can rule out: "Choice [C]" .
__________________________________________________________The correct answer is:
[B]: "

" .
__________________________________________________________
Answer:
Option A, 
Step-by-step explanation:
<u>Step 1: Determine the numbers that are multiples of 3</u>
8 → Not a multiple of 3
9 → Multiple of 3
14 → Not a multiple of 3
19 → Not a multiple of 3
25 → Not a multiple of 3
34 → Not a multiple of 3
38 → Not a multiple of 3
<u>Step 2: Determine the probability of chosing a multiple of 3</u>
Since we only have 1 number that is a multiple of 3 out of the 7 given numbers, that means that we do the following:


Answer: Option A, 