Step-by-step explanation:
1. draw the parallelogram with side 20cm and 25cm respectively and also the diagonal as well.
2.Clearly it forms a triangle in the parallelogram with three known lengths of side.
3.Using the cosine rule : c^2=b^2+c^2 -2bc cos c to find the obtuse angle.
X+y=27
x=2y
2y+y=27
y=9
x=27-y
x=27-9=18
Answer:
D
Step-by-step explanation:
Answer:
40 is the full amount
Step-by-step explanation:
Answer:
9/10
Step-by-step explanation: