Question

17At a science museum, Julia compares the length of a T-rex tooth and a crocodile tooth. The T-rex tooth is12foot long. The crocodile tooth is foot long.4What expression can be used to find how much longer the T-rex tooth is than the crocodile tooth?

Answer 1

The expression can be used to find how much longer the T-rex tooth is than the crocodile tooth:

Explanation:

make 1/4 to have the same denominator as 7/12

`\begin{gathered} (1)/(4)=(?)/(12) \\ (1)/(4)=(x)/(12) \\ 4x=12 \\ x=(12)/(4)=3 \end{gathered}`

1/4=?/12

1×12=12

12/4

3

3/12

7/12-3/12