Answer:
7/4
Step-by-step explanation:
(4/7)^-1
We know a^-b = 1/a^b
1/ (4/7)^1
7/4
 
        
                    
             
        
        
        
Answer:
that is the answer in the photo above
 
        
             
        
        
        
Answer: probability 0.01 % 
Step-by-step explanation:
P(A) = 10% = 10/100 = 0.10
pick two people - 
= P(A).P(A)
= 0.10 times 0.10
= 0.01
probability = 0.01
 
        
             
        
        
        
Answer:
53,901
Step-by-step explanation:
Here is the complete question : 
In which number does the digit 5 have a value that is ten times greater than the value of the digit 5 in the number 245,093?
43,567
45,248
53,901
562,011
In the number 245,093 : 
3 = units 
9 = tens 
0 = hundred
5 = thousand 
4 = ten thousand 
2 = hundred thousand 
the value of 5 in the number is 5000. the number that would have a value that it 10 times greater than 5 in 245,093 must occupy the value  of ten thousand.
looking through the options, it is only in 53,901 that 5 occupies a value of ten thousand 
 
        
             
        
        
        
Answer:
Let's calculate the "cups of sugar per dozen cookies" ratio:
2 cups
---------- = 0.8  (Rina)        
   2.5                                  
2.25 cups
------------- = 0.75 (Jonah)
      3
Rina uses more sugar for a dozen cookies.