-1????? Maybe I’m not sure
Answer:
∠A = 100
∠B = 50
∠C = 30
Step-by-step explanation:
Sum of all angles of triangle = 180
∠A + ∠B + ∠C = 180
2x +x + x - 20 = 180 {Combine like terms}
4x - 20 = 180
Add 20 to both sides
4x = 180 + 20
4x = 200
Divide both sides by 4
x = 200/4
x = 50
∠A = 2x = 2*50 = 100
∠B = x = 50
∠C = x - 20 = 50 - 20 = 30
Answer:
36
Step-by-step explanation:
This question can be solved using fundamental counting principle which means to say that if there are "m" ways of doing one thing and there are "n" ways of doing other thing then there are total "m*n" ways of doing other things.
For example: if there are 4 type of pens and 3 type of notebook then there are "4*3" ways to write on notebook using the pens.
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Using the above mentioned principle we have
six sided cube with number 1 to 6 written on it hence in first roll there are six possible outcome(1 or 2 or 3 or 4 or 5 or 6) similarly there are 6 possible outcome in other roll as well.
If the combination of outcome is to be deduced then there are 6*6 ways of outcome based on fundamental counting principle.
Hence there are 6*6 = 36 ways of possible outcomes.
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In the figure below
1) Using the theorem of similar triangles (ΔBXY and ΔBAC),
Where
Thus,
thus, BC = 7.5
2) BX = 9, BA = 15, BY = 15, YC = y
In the above diagram,
Thus, from the theorem of similar triangles,
solving for y, we have
thus, YC = 10.
