In this case
the only thing that you have to do is to isolate x
and then put y instead of x and put x instead of y :
The sum of all the angles in this line equals 180
a+90+21=180
a+111=180
a=69
Answer:
92.5 centimeters.
Step-by-step explanation:
The one-meter snake showed up as 2 cm in the developed photo. Since there are 100 centimeters in a meter, you subtract the length of the snake in centimeters by the length it shows up in the picture. 100-2 is 88, so that would be the difference. To find the length of the wall, you add the difference to how it showed up in the picture. 88+4.5=92.5.
Answer:
D
Step-by-step explanation:
They just proved that m< 3 =m< 7 and m< 4=m< 8
So if m< 8=m< 5 and m< 7=m< 6
You can plug in m<5 for m< 8 and m<6 for m<7
Therefore:
m<6=m<3
m<5=m<4
Also, the angles that were proved congruent were vertical angles so the theorem they put works
Check the picture below.
make sure your calculator is in Degree mode.