Answer:
m of angle A is 60 degrees, m of angle B is 80 degrees, and m of angle C is 40 degrees
Step-by-step explanation:
Given: BD=DC, this means the triangle BDC is isoceles because of the two equal sides.
Using the base angles Thereom we can tell that m of angle C is equal to m of angle 2.
Given that m of angle BDC is 100 degrees, using sum of angles in triangle we develop the equation
m of angle C= 180-100-angle 2
since angle 2 is equal to angle C we see that they are bothe equal to 40 degrees.
Now for B, we can easily tell it is 80 degrees since we found that angle 2 is 40 degrees and angle 1 is equal to angle 2 40+40=80 degrees
Lastly, for A we can tell it is 60 degrees, the reason is we found angle 1 is 40 degrees and we know that BDA=80 using supplemantary angles to BDC.
Develop the equation A=180-(80+40)=60 degrees
Answer:
It took Peter 28 minutes and 10.82 seconds to finish the race.
Step-by-step explanation:
We have that:
: Antonio = 28 min + 11.00 s (1)
: Julio = A - 0.08 s (2)
: Pete = J - 0.1 s (3)
Then, the time at which Pete finished the race is:
(4)
By entering equations (1), (2), (3) into (4) we have:
Therefore, it took Peter 28 minutes and 10.82 seconds to finish the race.
I hope it helps you!
Answer:
B:25°
Step-by-step explanation:
Now gets bisected by
.
Since, the angle is bisected, this means that the angle is split into two equal parts or the angle is halved.
We know that one of the angles is so the other angle has to be
also.
Hence, the .