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Mr. Mole left his burrow and started digging his way down.

A represents Mr. Mole's altitude relative to the ground (in meters) after
t minutes.

A=-2.3 t-7
How far below the ground does Mr. Mole's burrow lie?
meters below the ground

Mr. Mole left his burrow and started digging his way down. $\newline$ $A$ represents Mr. Mole's altitude relative to the ground (in meters) after $t$ minutes. $\newline$ $A=-2.3 t-7$ $\newline$ How far below the ground does Mr. Mole's burrow lie? $\newline$ meters below the ground

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Pythagorean theorem

Full solution

Q. Mr. Mole left his burrow and started digging his way down.

\newline

A

represents Mr. Mole's altitude relative to the ground (in meters) after

t

minutes.

\newline

A=-2.3 t-7

\newline

How far below the ground does Mr. Mole's burrow lie?

\newline

meters below the ground

Understand the problem: Understand the problem. $\newline$ We need to find the initial altitude of Mr. Mole's burrow relative to the ground. This is given by the altitude $A$ when $t$ (time in minutes) is $0$ .
Substitute values: Substitute $t = 0$ into the equation $A = -2.3t - 7$ to find the initial altitude $A$ . $\newline$ $A = -2.3(0) - 7$ $\newline$ $A = 0 - 7$ $\newline$ $A = -7$
Interpret the result: Interpret the result. $\newline$ Since $A$ represents Mr. Mole's altitude relative to the ground, a negative value indicates that the burrow is below ground level. Therefore, Mr. Mole's burrow lies $7$ meters below the ground.

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