Answer:
C. The circle is circumscribed about ΔABC
Explanation:
The circumscribed circle of a polygon is a circle that passes through all the vertices of the polygon.
Answer: 3x+y=-9
Step-by-step explanation:
Step 1 is distribute y+6 = -3(x+1)
y+6 =-3x-3
Mow you have to move your x over because standard form is Ax+By=C
y+6+3x =-3
Move your +6 by subtracting from both sides
3x+y=-9
Answer:
The population mean is 5 volts
Step-by-step explanation:
Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts
s=0.25
n = 8

Sample mean = 
Since n < 30 and population standard deviation is unknown
So, we will use t test
Formula : 

t=-1.69
Refer the t table for p value
Degree of freedom = n-1 = 8-1 = 7
So,
P value >α
So, We are failed to reject null hypothesis
Hence The population mean is 5 volts