I believe your best answer would be monitoring a buildings entry and exit way because an infrared sensor is an electronic instrument which issued<span> to sense certain characteristics of its surroundings by either emitting and/or detecting </span>infrared<span> radiation.</span>
Answer:
2y-2n-3a
Step-by-step explanation:
(7y-2n) - (5y+3a)
7y-2n-5y-3a
2y-2n-3a
Answer:
about 12 people
Step-by-step explanation:
cir.=2πr=62.8 , so r=31.4/π , vol of tower= base area × hight = πr² × 11.5 ≈ 3609.17 cm³ , number of people= vol/300 ≈ 12
Answer : easy try yourself I hope you can
Answer: a. Radius of circle = 
b. The equation of this circle :
Step-by-step explanation:
Given : Center of the circle = (3,10)
Circle is passing through (12,12).
a. To find the radius we apply distance formula (∵ Radius is the distance from center to any point ion the circle.)
Radius of circle = 
Radius of circle = 
i.e. Radius of circle = 
b. Equation of a circle =
, where (h,k)=Center and r=radius of the circle.
Put the values of (h,k)= (3,10) and r=
, we get
∴ The equation of this circle :