Answer:
Step-by-step explanation:
hello :
-3/7m<21
multiply by (-1) : 3/7m > 21
now dividid by 3/7 : m > 21×7/3
m > 49
Answer:i am not an expert at this math but you can see if you could learn something about or just see it or think about the question and see if you could find something about the question.
Step-by-step explanation:
For this case we propose a system of equations.
We know that a dime equals 10 cents and a nickel equals 5 cents.
So:
x: Let the variable that represents the number of dimes
y: Let the variable that represents the number of nickels
According to the statement we have:

We multiply the first equation by -0.10:

We have the following equivalent system:

We add the equations:

So, Jeff has 3 nickels

Jeff has 12 dimes.
Answer:
12 dimes and 3 nickels
4 - 8 = -4
A negative number is alwats at the left in a horizontal line.
Let's try to rapresent it.
-4 -3 -2 -1 0 +1 +2 +3 +4
So, you count from +4 to -4
Your answer is "8 units to the left of 4"
I believe that it’s the first one