Answer:
I think it's 25/30.
Step-by-step explanation:
You are told that the perimeter is 146 units. You look at the diagram and add up all the sides, which tells you the total perimeter. You then equate 146 and the total perimeter, as you know both these equal the perimeter. Then solve for x by using algebra.
Answer:
3600
Step-by-step explanation:
multiply all of the choices
10x15x6x4
Answer:
155°
Step-by-step explanation:
In Δ ABC, let A = x°
By Angle-sum property,
A + B + C = 180°
But, it is given that C = 130°
So, x + B + 130 = 180
B = 180 - 130 - x
B = 50 - x
Since AD and BD are internal bisectors of A and B,
∠ DAB = x/2 and
∠ DBA =
In Δ ADB, by angle-sum property,
∠ DBA + ∠ DAB +∠ ADB = 180°
+ ∠ ADB = 180°
25 + ∠ ADB = 180°
∠ ADB = 180 - 25 = 155°
Hence, ∠ ADB = 155°