Lesson 2: Patterns, Equations, and Graphs CE 2015
ALG I A1 2520 Unit 3: Solving Equations
1. Which of the following is an example of an open equation? (1 point)
5x + 7 = 12
12 + (–8) = 4
25 = 5(5)
8 + 0 = 8
1.A
2.D
3.B
4.A
5.D
6.D
7.C
8.C
9. (SA) the (4,1) are an ordered pair
the format for an ordered pair is (x,y)
so 4=x and 1=y putting in these values will give us 1=3(4)+1 and as you can see this is NOT TRUE
10.(SA) c-2.50 D where C is the cost. you can pick any number for D. after you do this you can solve for the cost of C
#1 ok
#2-8 ¿quien sabe?
#9 (4,1) is an ordered pair.
no idea which equation is is supposed to fit
It certainly does not satisfy y=3x+1
#10 true
#9
mrs.sue can u help me with Lesson 14: Equations and Inequalities Unit Test CE 2015
Math 7_A Unit 5: Equations and Inequalities plz i need help plz
good
1. The equation 5x + 7 = 12 is an example of an open equation. It has a variable (x) that can take on different values.
2. The equation 12 + (-8) = 4 is not an example of an open equation. It is a simple arithmetic equation that can be solved to find the value of the missing variable.
3. The equation 25 = 5(5) is not an example of an open equation. It is a mathematical expression that can be simplified to a value.
4. The equation 8 + 0 = 8 is not an example of an open equation. It is a simple arithmetic equation that can be solved to find the value of the missing variable.
To find the example of an open equation among the given options, we need to understand what an open equation is.
An open equation is an equation that contains one or more variables and can have multiple solutions. It means that there are values of the variable(s) that can make the equation true.
Let's go through the options and determine if they are open equations:
1. 5x + 7 = 12: This equation contains the variable x. It is not an open equation because there is only one possible solution for x that makes the equation true.
2. 12 + (–8) = 4: This equation does not contain any variables. It is not an open equation because there are no variables to have multiple solutions.
3. 25 = 5(5): This equation does not contain any variables. It is not an open equation because there are no variables to have multiple solutions.
4. 8 + 0 = 8: This equation does not contain any variables. It is not an open equation because there are no variables to have multiple solutions.
Based on the analysis, the example of an open equation among the given options is option 1: 5x + 7 = 12.