I think it’s 160
Because 90+70=160
Ok so for the first one:
-We know that the 4 angles add up to 360
-3 of the angles are given
-To find the fourth we simply subtract the sum of the 3 angles from 360.
Equation: 120+ 100+ 100 + x = 360
= 320+x= 360
Now by making x the subject
x= 360 - 320
= 40 degrees
The second one follows the same method
150+ 77+ 48+ x =360
275 +x = 360
x= 360-275
x= 85
Answer:
12.30
Step-by-step explanation:
Soh Cah Toa
You know the angle, and the opposite. You want to find the adjacent. So you will you Toa.
tan(°) = O/A
tan(26°) = 6/A
Rearrange to get A on its own.
Atan(26°) = 6
A = 6/tan(26°)
A = 12.301 = 12.30 (2dp)
Answer:
The system has no solution.
Step-by-step explanation:
Write the system as
y - 4x =3
2y - 8x = 3
The 2nd equation can be written as
2(y - 4x)
and the system would be
y - 4x =3
2(y - 4x) = 3
Now, call y -4x = z. Then we would have the system
z = 3
2z = 3
But if z =3 then 2z = 6 and we have a contradiction.
We conclude that the system has no solution.
