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quester [9]
2 years ago
13

Roger has 8 pounds of shrimp. He cooked 6 pounds. Enter the percentage of pounds he has left.

Mathematics
1 answer:
Mrac [35]2 years ago
8 0

Answer:

20% i think

Step-by-step explanation:

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Need to find A and B, I already found C
Semenov [28]
I'm going to assume you've learn sin, cos, and tan. To find a you must do:
sin^{ - 1}  =  \frac{a}{12}
Once you find a, you can use the Pythagorean Theorem to find b:
{a}^{2}  +  {b}^{2}  =  {c}^{2}
Or you can do:
cos^{ - 1}  =  \frac{b}{12}
You can find these functions on a scientific calculator. Let me now if you need more help.

5 0
3 years ago
Evaluate f(0) for f(x) = x2 -7x-30
Nostrana [21]
Just plug in the 0 as it says in f(x) = f(0) into the equation.

f(x) = x² - 7x - 30

f(0) = 0² - 7(0) - 30

f(0) = 0 - 0 - 30

f(0) = -30

hope this helps, God bless!
8 0
3 years ago
A simple random sample of size n = 49 is obtained from a population with u = 89 and o = 21.
Furkat [3]

Answer:

a) B. The distribution is approximately normal.

b) 0.0322 = 3.22%

c) 0.0202 = 2.02%

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean  and standard deviation , the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean and standard deviation:

\mu = 89, \sigma = 21

Sample of 49:

This means that n = 49, s = \frac{21}{\sqrt{49}} = 3

(a) Describe the sampling distribution of x.

By the Central Limit Theorem, approximately normal, and the correct answer is given by option B.

(b) What is P (x > 94.55) ?

This is 1 subtracted by the p-value of Z when X = 94.55, so:

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{94.55 - 89}{3}

Z = 1.85

Z = 1.85 has a p-value of 0.9678.

1 - 0.9678 = 0.0322

So 0.0322 = 3.22%

Question c:

This is the p-value of Z when X = 82.85. So

Z = \frac{X - \mu}{s}

Z = \frac{82.85 - 89}{3}

Z = -2.05

Z = -2.05 has a p-value of 0.0202.

So

0.0202 = 2.02%

7 0
3 years ago
Ruth Barr rented a car for 5 days at 59.95 per day with unlimited mileage she drove 1156 miles and paid 137.76 for gasoline. Wha
Paha777 [63]

Answer:

£13860.44

Step-by-step explanation:

59.95 / 5 = 11.99

£11.99 for 1 day

11.99 * 1156 = 13860.44

3 0
3 years ago
Show me how to find x using the correct equation shown here (geometry)
Umnica [9.8K]

Step-by-step explanation:

8x - 17° = 5x + 19° ( being corresponding angles)

8x - 5x = 19° + 17°

3x = 36°

x = 12°

Hope it will help :)❤

6 0
2 years ago
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