is -7 + 9 equals -9 + 7 true false or open

Answer 1

False

Answer 2

is 4x – 3 = 19 true false or open

Answer 3

True

Answer 4

which of the following is a solution to the equation 16 = 4x - 4
a.-5
b.-4
c. 5
d.16

Answer 5

To find the solution to the equation 16 = 4x - 4, we can solve for x.

16 = 4x - 4

Adding 4 on both sides:
20 = 4x

Dividing both sides by 4:
x = 5

Therefore, the solution to the equation is c. 5.

Answer 6

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 students model is 42 in. what should the width of the model Be

Answer 7

Let's assume the width of the classroom is "x" inches.

According to the given information, the length of the classroom is 2.4 times its width, so the length would be 2.4x inches.

The length of the student's model is given as 42 inches.

Since the length of the model represents the length of the actual classroom, we can set up the following equation:

2.4x = 42

Divide both sides of the equation by 2.4 to solve for x:

x = 42 / 2.4
x ≈ 17.5

Therefore, the width of the model should be approximately 17.5 inches.

Answer 8

use Mental Math to determine the solution to x / 3 equals 24

Answer 9

To solve the equation x / 3 = 24 using mental math, we can multiply both sides of the equation by 3 to isolate x.

x / 3 = 24

(x / 3) * 3 = 24 * 3

This simplifies to:

x = 72

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