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Rudiy27
3 years ago
9

Robert's father is 5 years older than 3 times Robert's age. Let Robert's age be denoted by R and let Robert's father's age be de

noted by F. Write an equation that relates Robert's age and his father's age.
How do I write an equation to fit this, can someone tell me the steps on how to do it?
Mathematics
1 answer:
Kipish [7]3 years ago
6 0

Answer:

F=5+(R)3

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

a. -A normal distribution is expressed in the form X~N(mean, standard deviation).

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Hence, the probability of consuming less than 2000 calories is 0.08691

c. The proportion of customers consuming more than 5000 calories is calculated as:

P(X>x)=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(Z>\frac{5000-2885}{651})\\\\=P(z>3.2488)\\\\=1-0.99942\\\\=0.00058

Hence, the proportion of customers consuming over  5000 calories is 0.00058

d. The least amount of calories to get the award is calculated as:

1% is equivalent to a z value of 0.50399.

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0.01=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(z>\frac{\bar X-2885}{651})\\\\\1\%=0.50399 \\\\\frac{\bar X-2885}{651}=0.50399 \\\\\bar X=0.50399\times 651+2885\\\\=3213.09

Hence, the least amount of calories consumed to qualify for the award is 3213.10 calories.

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