Answer:
0.6%
Step-by-step explanation:
Percent Error = the absolute value of (actual value observed-expected value)/(expected value) x100%
(17.8-17.9)/(17.9) = -0.006
Absolute value is 0.006
0.006 times 100% equals 0.6%
0.6 %
percentage error=(17.9-17.8)/17.8 ×100=1/178×100=100/178=50/89≈0.56≈0.6
t=-105
What we need to do here is to isolate t.
Let's multiply both sides by -15.
7*-15= -105
a= 52
82 + (x+60) + (x+54) = 180
82 + 2x + 114 = 180
2x + 196 = 180
2x = -16
x = -8
plug in -8 in x +60
-8 + 60 = 52
a = 52