Answer:
all of them???
Step-by-step explanation:
Answer:
5.001971
Step-by-step explanation:
sin(53.1)=
Pythagorean Theorem. 5^2+12^2=c^2.
25+144=c^2
169=c^2
sqrt169=13
13 units
<u>Answer:</u>
2x²+6x-9=0
<u>Step-by-step explanation:</u>
2x(3+x)=9
6x+2x²=9
2x²+6x-9=0
Answer:
110
Step-by-step explanation:
A quadrilateral's angles always add up to 360 degrees. This is because a triangle has 180 degrees, and a quadrilateral can always be split into two triangles.
This said, we can set up the following expression:
40+128+82+x=360
168+82+x=360
250+x=360
x=110