Answer:
c
Step-by-step explanation: trust me
 
        
                    
             
        
        
        
B 
Hope I helped thanks so much!
        
                    
             
        
        
        
Just measure the width (or height, if you'll be stacking the pennies 
a mile high) of a penny, then divide 5280 feet by whatever you find. 
This is a great activity for a class, and in fact a good way to start 
the project. First take one penny, and work out an answer. Then get 
100 pennies, and measure them; do the same calculation to see how many 
pennies it will take to make a mile. There will probably be a 
difference, because you can measure 100 pennies more accurately than a 
single penny. Or maybe you have a micrometer that will measure one 
penny precisely. Which is better can be a good discussion starter. And 
don't forget to try it in metric, too.
Just to illustrate, using a very rough estimate of a penny's width, 
let's say a penny is about 3/4 inch wide. The number of pennies in a 
mile will be
 5280 ft 12 in 1 penny
 1 mile * ------- * ----- * ------- = 5280 * 12 * 4/3 pennies
 1 mi 1 ft 3/4 in
This gives about 84,480 pennies. (This method of doing calculations 
with units is very helpful, and would be worth teaching.)
If we measure 100 pennies as 6 ft 1 in, we will get
 5280 ft 100 pennies
 1 mile * ------- * ----------- = 5280 * 100 * 12 / 73 pennies
 1 mi 6 1/12 ft
This gives us 86794.5205 pennies in a mile.
        
             
        
        
        
R = 10, T = 20
OK. Calculate the length of segment RT:
|RT| = |20 - 10| = |10| = 10
Divide |RT| into a ratio of 2:3
2 + 3 = 5
10 : 5 = 2
Therefore we have
|RS| = 2 · 2 = 4 and |ST| = 3 · 2 = 6   (4 + 6 = 10 CORRECT)
T = R + 4 and T = T - 6
T = 10 + 4 = 14; T = 20 - 6 = 14 CORRECT
<h3>Your answer is T = 14.</h3>
 
        
             
        
        
        
Answer:
The correct answer here is 2/3
Step-by-step explanation:
That is because 7 doubled is 14 and 7 multiplied by 3 is 21.