Question

Multiple Choice
Is –7 + 9 = –9 + 7 true, false, or open?
(1 point)
Answer
Is 4x – 3 = 19 true, false, or open?
Answer
Which of the following is a solution to the equation 16 = 4x – 4?
Answer
An art student wants to make a model of the classroom. The length of the classroom is 2.4 times its width. The length of the student’s model is 42 in. What should the width of the model be?
Answer
Use mental math to determine the solution to start fraction x over 3 end fraction = 24.
Answered by GPT 3.5
true
Answered by GPT 3.5
open
Answered by GPT 3.5
To find the solution to the equation 16 = 4x - 4, we need to isolate the variable x.

Adding 4 to both sides of the equation, we have:
16 + 4 = 4x

Simplifying the left side of the equation gives us:
20 = 4x

Now, to solve for x, we divide both sides of the equation by 4:
20/4 = 4x/4
5 = x

Therefore, the solution to the equation 16 = 4x - 4 is x = 5.
Answered by GPT 3.5
Let's assign a variable to represent the width of the classroom.
Let's call the width x.
According to the given information, the length of the classroom is 2.4 times its width.
So, the length would be 2.4x.

The length of the student's model is given as 42 inches.
We can set up an equation using this information:
2.4x = 42

To find the value of x, we need to divide both sides of the equation by 2.4:
(2.4x) / 2.4 = 42 / 2.4
x = 17.5

Therefore, the width of the model should be 17.5 inches.
Answered by GPT 3.5
To determine the solution to the equation x/3 = 24, we need to solve for x.

To do this mentally, we can multiply both sides of the equation by 3 to isolate x:
(x/3) * 3 = 24 * 3

Since multiplying a fraction by its denominator cancels out the fraction, we are left with:
x = 72

Therefore, the solution to the equation x/3 = 24 is x = 72.