4a + 3 - 9 = -7 + 2 + a
4a - 6 = -5 + a
4a - a = -5 + 6
3a = 1 / : 3
a = 1/3
Answer:
these triangles some is 90°.
72°+2x=90°
2x=90°-72
2x=18
x=18/2
x=9
Answer:
35.4259791678 (or 35.426)
Step-by-step explanation:
Area is length x width. Since this is a square the length and the width are the same. So you would need to find the square root of 1255. (In simpler words, what times what is 1255?)
