Answer:
m ∠ABD = 140°
m ∠DBC = 40°
Step-by-step explanation:
∠ (15x - 4) + ∠(5x - 8) = 180°
15x - 4 + 5x - 8 = 180
20x -1 2 = 180
20x = 180 + 12
x = 9.6
m ∠ABD = 15x - 4 = 140°
m ∠DBC = 5x - 8 = 40°
<h2>
Answer:</h2>
To solve this problem we will use Heron's formula:

Where
are the side lengths of the triangle and
is the semiperimeter (half the perimeter of the triangle). We know that:

Also:

Finally:

Answer:
6x5 can also be 6+6+6+6+6
3+3+3+3 can also be 3x4
5+5+5+5+5 can also be 25
3x3 can be 3+3+3
Step-by-step explanation:
Answer:
the answer is 8
Step-by-step explanation: so first what you want to do is you want to set up the equation 18x-41. then you want to do 15x because of the 15 per hour. then you minus 17. so your equation is 18x-41=15x-17 then the answer to that is 8 hours
Triangle abc and def are paralell