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balandron [24]
3 years ago
13

Which graph is an example of a cubic function?

Mathematics
1 answer:
AleksAgata [21]3 years ago
7 0
Cubic functions usually look like an S
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I need help pls WILL GIVE BRAINLIEST
Alex73 [517]

Answer: (3,-2)

Step-by-step explanation:

-3x-7y=5\\15x+6y=33

5(-3x-7y)=5(5)\\-15x-35y=25

new system:

-15x-35y=25\\15x+6y=33

add.

-29y=58\\y=-2

plug in -2 for y

-3x-7(-2)=5\\-3x+14=5\\-3x=-9\\x=3

system:

(3,-2)

4 0
2 years ago
Read 2 more answers
The average score of all golfers for a particular course has a mean of 75 and a standard deviation of 4. Suppose 64 golfers play
Vilka [71]

Answer:

0.0228 = 2.28% probability that the average score of the 64 golfers exceeded 76.

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 normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes 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 \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

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

In this problem, we have that:

\mu = 75, \sigma = 4, n = 64, s = \frac{4}{\sqrt{64}} = 0.5

Find the probability that the average score of the 64 golfers exceeded 76.

This is 1 subtracted by the pvalue of Z when X = 64.

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

By the Central Limit Theorem

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

Z = \frac{76 - 75}{0.5}

Z = 2

Z = 2 has a pvalue of 0.9772

1 - 0.9772 = 0.0228

0.0228 = 2.28% probability that the average score of the 64 golfers exceeded 76.

6 0
3 years ago
In the figure, parallel lines r and s are cut by line t
Lady_Fox [76]

Answer:

<u>x = 49</u>

Step-by-step explanation:

Since the line is parallel, the value of 2x - 8 is equal to 90.

=> 2x - 8 = 90

=> 2x = 98

=> <u>x = 49</u>

7 0
2 years ago
Read 2 more answers
4-63
Savatey [412]

Answer:

$36.88

Step-by-step explanation:

4 inch cost $2.95

50 inch cost 2.95*50 / 4 = $36.875 = $36.88

3 0
2 years ago
Brian’s desk is 3 feet 7 inches long. Given that 1 inch is approximately 2.54 centimeters, about how many centimeters long is th
Alborosie

I hope this is right but I think It’s c

7 0
3 years ago
Read 2 more answers
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