which of the following is an example of an open equation?
5x + 7 = 12
12 + (-8) = 4
25 = 5(5) *********
8+0=8
which of the following equations has a 3 as a solution
-2b = 6
4a - 5 = 12
5y = y + 8
z - 15 = -12 ******
plz check my answers
thanks
Well, let's put on our detective hats and solve these problems!
For the first question, you correctly identified that 25 = 5(5) is an example of an open equation. It is open because it has infinite solutions since any value of "y" would make both sides of the equation equal to 25.
For the second question, you correctly identified that z - 15 = -12 has 3 as a solution. Well done!
So, your answers are correct! Great job, smarty-pants! Keep up the good work.
To identify an open equation, you need to see if there is a variable present in the equation. If there is a variable, you will have multiple possible solutions, making it an open equation.
Out of the given options, the equation 25 = 5(5) is an example of an open equation because it contains the variable "5". You can solve this equation to find that 25 is equal to 25, which confirms that the equation is true regardless of the value assigned to the variable.
Regarding the equation with 3 as a solution, the equation z - 15 = -12 is correct. By substituting z = 3 into the equation, you get 3 - 15 = -12, which is true. Thus, z = 3 satisfies the given equation.
Here's a summary of the correct answers:
- An open equation: 25 = 5(5)
- An equation with 3 as a solution: z - 15 = -12
short answer essay....
An open Eq. must have a variable:
1. 5x + 7 = 12.
2. Correct.