Answer:
18.18
Step-by-step explanation:
total sum of angle of quadrilateral is 360
70+60+ 7x-4+4x-3=360
160-7 +11x =360
153 +11x =360
11x=360-153
x=207/11
x=18.18
Answer:
a triangle as 3 sides
Step-by-step explanation:
I’m with the guy above me
<span>21^2+a=29^2
</span>
a+441 = 841
a=400
<span>what is the value of "a" in the Pythagorean theorem?
</span>a^2+b^2=c^2
20^2+21^2=c^2
400+441=c^2
841=c^2
292=841
841=841
It's a right triangle
