n = last test
(87 + 78 + 61 + n) : 4 = 78,5
87 + 78 + 61 + n = 78,5 x 4
n = 314 - 226
n = 88
Answer:
x = 19
Step-by-step explanation:
These angles are supplementary angles which mean they add up to 180:
8x - 7 + x + 16 = 180
9x + 9 = 180
9x = 180 - 9
9x = 171
x = 171/9
x = 19
mutilply pie squared by your radius you solve the problem cant draw bcause i dont the tools. ;)
Answer:
16.76
Step-by-step explanation: