Solve the inequality 2x + 3 > 19
1 answer:
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Answer:
Step-by-step explanation:
The number inside the square root symbol is the number you have to get when you multiply a certain number twice.
So :
What multiplied by itself is 121?
Backwards equation:
Do not do the backwards method all the times, it does not work for all numbers.
a. The first variable is x and the second variable is y.
b. The equations are and
Step-by-step explanation:
Step 1:
The first step is to define the variables. The variables can be any two symbols, letters, characters, etc.
Here let the first variable be x and the let the second variable be y.
So the variables are defined as x and y.
Step 2:
The sum of the given variables is 12.
The first variable + the second variable = 12,
The difference between the two variables is 4.
The first variable - the second variable = 4.
Step 3:
If we add both the equations we get, and
x = 8 and y = 4.