Answer:
Answer is A.
Step-by-step explanation:
Mass of Sodium Chloride in one 50kg person =
grams
Mass of Sodium Chloride in
50kg people =
* 
=
=
So the Answer is A.
The solution of the system of equation is (-7, -2).
<h2>Given</h2>
The system of the equations;

From equation 1

Substitute the value of y in equation 1

The value of x= 2 is rejected because x = 2 not satisfy the equation.
Substitute 2 for the value of x in equation II
y − x = 5
y – 2 = 5
y = 5 +2
y = 7 (x =2, y =7) … Not included in the options
If x = -7
Substitute the value of x = -7 in the equation

Hence, the solution of the system of equation is (-7, -2).
To know more about System of Equation click the link given below.
brainly.com/question/1495351
He should buy 32 feet of fencing. I got 32 by just finding the perimeter or in other words adding 10+10+6+6 which equal 32. You would NOT do area or 10×6 because that would include that land within the fenced area and who wants 60 feet of fencing that you can't put anything in?
Good luck, hope that helped.
It does not contain an equal sign. It cannot be solved for unless the value of the variable is given.
Answer:
2.07
Step-by-step explanation: