Answer:
A. Henry's balloon was farther from the town at the beginning, and it
traveled more quickly.
Step-by-step explanation:
have amazing day♡
 
        
             
        
        
        
Answer:
a) 1.8 × 10^-12 cm³ or 1.8 × 10^-12 cubic meters
b) 7.1 × 10^-6 mm² or 7.1 × 10^-6 square millimeters
Step-by-step explanation:
a) We are assuming that the shape of the bacteria is a sphere.
Hence, Volume of the Sphere(Bacteria) = 4/3 × π × r³
Diameter = 1.5 μm
Radius = Diameter/2 = 1.5μm/2
= 0.75μm
We are told that the volume should be in cubic centimeters
Converting 0.75μm to centimeters
1 μm = 1 × 10^-4 cm
0.75 μm = 
Cross Multiply
= 0.75 μm × 1 × 10^-4 cm/ 1 μm
= 0.000075cm
Volume of the Sphere(Bacteria) = 4/3 × π × r³
= 4/3 × π × (0.000075)³
= 1.767145867 × 10^-12 cm³
Approximately as 2 significant figures = 1.8 × 10^-12 cm³
b) The formula for the Surface area of a Sphere = 4πr²
Diameter = 1.5 μm
Radius = Diameter/2 = 1.5μm/2
= 0.75μm
We are told that the surface area should be in square millimeters 
Converting 0.75μm to millimeters
1 μm = 0.001 mm
0.75 μm = 
Cross Multiply
= 0.75 μm ×0.001mm/ 1 μm
= 0.00075mm
Surface Area of a Sphere
= 4 × π × r²
= 4 × π × 0.00075²
= 7.06858 ×10^-6 mm²
Approximately to 2 significant figures
= 7.1 × 10^-6 mm²
 
        
             
        
        
        
Answer:
Step-by-step explanation:8? 8 is greater than 0 xd
 
        
             
        
        
        
Answer:
Thus, the two root of the given quadratic equation  is 5.24 and 0.76 .
 is 5.24 and 0.76 .
Step-by-step explanation:
Consider, the given Quadratic equation, 
This can be written as ,  
We have to solve using quadratic formula,
For a given quadratic equation  we can find roots using,
 we can find roots using,
 ...........(1)
  ...........(1)
Where,   is the discriminant.
 is the discriminant.
Here, a = 1 , b = -6 , c = 4
Substitute in (1) , we get,





 and
 and 
We know  (approx)
(approx)
Substitute, we get,
 (approx) and
(approx) and  (approx)
(approx)
 (approx) and
(approx) and  (approx)
(approx)
Thus, the two root of the given quadratic equation  is 5.24 and 0.76 .
 is 5.24 and 0.76 .