Question

NEED HELP URGENTLY!!

Answer 1

• 19.8

Explanation:

Estimate 3√43

• There is a formula for estimating square root of non-perfect square numbers
• √A²±B = A ± B/2A
• where A² is the nearest perfect square, B is the difference between the original number and the perfect square

Using same formula, we'll estimate √43

• 43 = 36 + 7= 6² + 7
• √43 = √(6² + 7) = 6 + 7/2*6 = 6.583 ≈ 6.6 rounded to nearest tenth

Answer to the original question:

• 3√43 = 3*6.6 = 19.8