Answer:
to two decimal places
= 6.04 mega joules
Step-by-step explanation:
The volume of the half tank
= πr²h
r= 2 m
h= 14/2= 7 m
Volume= 22/7 *2² *7
Volume= 88 m³
work (in mega-joules) needed to pump all of the water to the top of the tank
= Volume*mass density *acceleration*distance
= 88*1000*9.8*7
= 6036800 joules
In mega joules
= 6.036800 mega Joules
to two decimal places
= 6.04 mega joules
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Look at the picture.
Use the Pythagorean theorem for calculate the length of CA:

We have

Substitute:

 subtract 100 from both sides
             subtract 100 from both sides

ΔADC and ΔACB are similar. Therefore the corresponding sides are in proportion:

We have:

Substitute:

 cross multiply
              cross multiply
 divide both sides by 5
            divide both sides by 5

If you mean the length of segment CD, then use the proportion:

Substitute:

 
        
             
        
        
        
Answer:
xy miles
Step-by-step explanation:
 
        
             
        
        
        
Answer:
0.38 and 0.7 maybe it's the answer
Step-by-step explanation:
power of 10 in above questions are 2 and 3 respectively
 
        
             
        
        
        
The 
4th selection is appropriate:
  The first line is a dashed line which joins ordered pairs (-2, 1) and (3, 1). The second line is a dashed line and joins ordered pairs (-2, -2) and (3, 3). The portion common above the first line and above the second line is shaded