-4 = 20 - 10x i dont know what to do pls help
2 answers:
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In writing down the opposite value of each number, the comparison Tina wrote incorrectly is: Comparison X
<em><u>Recall:</u></em>
- Opposite values of a number are numbers that are of the same distance from point zero on a number line.
- For example, if a is a number, the opposite of a is -a. Or if -3 is a number, the opposite of -3 is 3 because -3 and 3 are both 3 units away from point zero on a number line.
Thus, Tina's comparison is given in the diagram attached below.
The comparison labelled X is incorrect because -(-9) = 9. Opposite of 9 is -9.
Therefore, in writing down the opposite value of each number, the comparison Tina wrote incorrectly is: Comparison X
Learn more about opposite value of a number on:
For this case, what we must do is find the surface area of the cube.
By definition, the surface area of a cube is given by:
Where,
L: length of the sides of the cube.
Substituting values we have:
Answer:
The total surface area that will be painted is:
24 cm²
By definition, the surface area of a cube is given by:
Where,
L: length of the sides of the cube.
Substituting values we have:
Answer:
The total surface area that will be painted is:
24 cm²