The number is -9
Step-by-step explanation:
Let x be the number then according to given statement

Subtracting 10 from both sides

Subtracting x from both sides

Dividing both sides by 3

<u>Verification:</u>

The number is -9
Keywords: Linear equation, variables
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The final cost depends on the amount he buys since the 16.99 is the constant. Equation form is 16.99n where n is the amount hence the inconsistent variable
Answer: 120
<u>Step-by-step explanation:</u>
Permutation means that order matters.

Answer:
The answer is perpendicular to the base.
Step-by-step explanation: