Which algebraic equation best represents Jarrett's hair growth rate? David's hair grows at a rate four times as fast as Jarrett'
2 answers:
Answer:
D.
Step-by-step explanation:
Let D represent David's hair growth and J represent Jarrett's hair growth.
We have been given that David's hair grows at a rate four times as fast as Jarrett's. We are asked to find the algebraic equation that best represents Jarrett's hair growth rate.
We can represent our given information in an equation as:
Dividing both sides by 4 we will get,
Therefore, the equation best represents Jarrett's hair growth rate and option D is the correct choice.
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Answer: 0.475 cups of broth per serving.
Explanation:
1) Ratio given:
i) To facilitate the operations, transform the mixed number 4 3/4 cups into improper fraction:
4 + 3/4 = [16 + 3] / 4 = 19 / 4
ii) ratio broth: servings
2) Proportion with the unknown number of cups of broth per serving:
3) Solve for the unknown:
x = [19 / 4] cups × 1 serving / 10 servings = 19 / 40 cups = 0.475 cups
Explanation:
1) Ratio given:
i) To facilitate the operations, transform the mixed number 4 3/4 cups into improper fraction:
4 + 3/4 = [16 + 3] / 4 = 19 / 4
ii) ratio broth: servings
2) Proportion with the unknown number of cups of broth per serving:
3) Solve for the unknown:
x = [19 / 4] cups × 1 serving / 10 servings = 19 / 40 cups = 0.475 cups