If 42 ⋅ 69 = 2,898 , what is 4.2 × 6.9 ?(1 point)

Question

Responses

289.8
289.8

2,898
2,898

2.898
2.898

28.98

Answer 1

To find \( 4.2 \times 6.9 \), we can rewrite the multiplication using the original multiplication \( 42 \times 69 \):

\[ 4.2 \times 6.9 = \frac{42}{10} \times \frac{69}{10} = \frac{42 \times 69}{100} \]

Since \( 42 \times 69 = 2898 \), we can substitute that in:

\[ 4.2 \times 6.9 = \frac{2898}{100} = 28.98 \]

So, the correct answer is:

28.98