The ratio of Sam's to John's money is 4.7. The difference in their money is $9. How much money does Sam have?

the answer is 3.4.7 because it's the answer

Sam has 21 dollars

the ratio is 12:21

Step-by-step explanation:

Original Ratio = 4:7  

Difference of numbers = 9

Take the first number = 4x

Then the other = 7x

gives us: 7x-4x=9

Now we find a factor of 9: 3x=9

x=9/3

x = 3

Therefore the 1st number = 4x = 4(3)= 12

2nd number = 7x = 7(3)=21

Proof: 21-12=9

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

step-by-step explanation: 4 cause 2+2=4