Question

based on the forage table, which mathematical expression shows the amount of energy the horses receive per kilogram of island grass? hide all a 34,930 kcal ÷ 8.5 kg b 8.5 kg × 10% c 34,930 kcal ÷ 10% d 8.5 kg × 34,930 kcal

Explanation:

Step1: Understand the Goal

We need to find the energy per kilogram of island grass. Energy per unit mass is total energy divided by total mass.

Step2: Analyze Each Option

• Option A: \( 34,930 \, \text{kcal} \div 8.5 \, \text{kg} \) calculates total energy divided by total mass, which is energy per kilogram.
• Option B: \( 8.5 \, \text{kg} \times 10\% \) finds a percentage of the mass, not energy per kg.
• Option C: \( 34,930 \, \text{kcal} \div 10\% \) scales energy by a percentage, not related to per kg.
• Option D: \( 8.5 \, \text{kg} \times 34,930 \, \text{kcal} \) multiplies mass and energy, which is not per kg.

Answer:

A. \( 34,930 \, \text{kcal} \div 8.5 \, \text{kg} \)