Answer:
x is 67
Step-by-step explanation:
angles on a straight line.
Answer:
The system has infinitely many solutions
Step-by-step explanation:
There are no variables left. And the final equation is correct.
It means the system is going to be correct for any value of variables. So there are infinitely many solutions
We use the formula:
x± s <span>t_<span>(1−c)/2 / </span></span>√n = 5
(1 - c)/2 = (1 - 0.95) / 2 = 0.025
Using the t score calculator at this value, at the 95% confidence internval,
t = 0.5080, So
100 - 19(0.5080) / √n = 5
Solving for n
n = 97
a) 97
b) yes
As OB is the perpendicular bisector of AD. So AO = OD
Hence
2x + 5 = 3x – 5
3x – 2x = 5 + 5
<span>x = 10</span>
