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d1i1m1o1n [39]
3 years ago
15

What is the answer to this following question 11(a+6)

Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
7 0
11a+66 hope this helped
r-ruslan [8.4K]3 years ago
5 0
11(a+6) = 11(a)+11(6) = 11a+66
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Add them all, please
Mamont248 [21]

Answer:

10ax - 2by + 2cz

4 0
2 years ago
Nancy's spaghetti and meatballs recipe calls for 2 cloves of garlic the recipe makes 8 servings how much garlic is in each servi
devlian [24]

Answer:

1/4 clove

Step-by-step explanation:

4 0
3 years ago
Of the total population of the United States, 20% live in the northeast. If 200 residents of the United States are selected at r
Snezhnost [94]

Answer:

0.0465 = 4.65% probability that at least 50 live in the northeast.

Step-by-step explanation:

I am going to use the normal approximation to the binomial to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be 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.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

n = 200, p = 0.2

So

\mu = E(X) = np = 200*0.2 = 40

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{200*0.2*0.8} = 5.65685

Approximate the probability that at least 50 live in the northeast.

Using continuity correction, this is P(X \geq 50 - 0.5) = P(X \geq 49.5, which is 1 subtracted by the pvalue of Z when X = 49.5. So

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

Z = \frac{49.5 - 40}{5.65685}

Z = 1.68

Z = 1.68 has a pvalue of 0.9535

1 - 0.9535 = 0.0465

0.0465 = 4.65% probability that at least 50 live in the northeast.

3 0
3 years ago
What percent of 40 is 16?
kotegsom [21]

Answer: E. 40

Step-by-step explanation:

<u>Concept: </u>

- When you encounter questions that state "what percent of [a] is [b]"  then it means asking for a fraction of b to a, which is "(b/a)×100%".

- If you are still confused, I would provide some examples

  • What percent of 20 is 5: (5/20)×100% = 25%
  • What percent of 10 is 2: (2/10)×100% = 20%

---------------------------------------------------------------------------

<u>Solve:</u>

(16/40)×100% = 0.4 × 100% = 40%

Hope this helps!! :)

Please let me know if you have any questions

5 0
3 years ago
What is 247,039 rounded to the nearest thousand?​
kvv77 [185]

Answer:

247,000

Step-by-step explanation:

3 0
2 years ago
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