ANSWER:
The correct answer is
-This study is blind.
-This study is an experimental study.
STEP-BY-STEP EXPLANATION:
This study includes a controlled treatment (in this manner it is an investigation) and subjects didn't have a clue about the idea of the treatment so it is visually impaired.
Answer:
3.5 inches
Step-by-step explanation:
half of 7 is 3.5
Assuming that I earn 4% of $2,500 per year, I would earn $800 after 8 years.
40°, 60° and 80°
sum the parts of the ratio 2 + 3 + 4 = 9
The sum of the angles in a triangle = 180°
Divide 180 by 9 to find one part of the ratio
= 20° ← 1 part of the ratio
2 parts = 2 × 20 = 40°
3 parts = 3 × 20 = 60°
4 parts = 4 × 20 = 80°
The angles in the triangle are 40°, 60° and 80°