Answer:
D) 50
20/0.4=50
Step-by-step explanation:
Answer:

Step-by-step explanation:
"At least" is inclusive, so you can be 21 years old.
Answer:
228
Step-by-step explanation:
Answer:
x = 25
Step-by-step explanation:
We know that the remaining angles add up to 90°, because the right angle (triangles have 180° total.)
2x + 15 + x = 90 | Given
3x + 15 = 90 | Combine x
3x = 75 | Subtract 15
x = 25