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Aleksandr-060686 [28]
3 years ago
12

Which expressions are equivalent to z + (z + 6)

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

C  2(z+3)

Step-by-step explanation:

z+(z+6)

Combine like terms

2z+6

We can factor out a 2 from each term

2(z+3)

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A study conducted by the Center for Disease Control that asked 15,000 students about
BaLLatris [955]

Answer:

The sampling distribution of \hat p is: \hat p\sim N(p,\ \frac{p(1-p)}{n}).

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

\mu_{\hat p}=p

The standard deviation of this sampling distribution of sample proportion is:

\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}

The study was conducted using the data from 15,000 students.

Since the sample size is so large, i.e. <em>n</em> = 15000 > 30, the central limit theorem is applicable to approximate the sampling distribution of sample proportions.

So, the sampling distribution of \hat p is: \hat p\sim N(p,\ \frac{p(1-p)}{n}).

5 0
3 years ago
Please help me! It's due today at 8:30!!!
klemol [59]

Answer:

137.842

Step-by-step explanation: hope this helps :) can I please get a brain list :)

5 0
2 years ago
Read 2 more answers
I really don't get these questions
Mazyrski [523]

Answer:

B

Step-by-step explanation:

280 + 5(–5) + (–42) + 2(75) + (–200)

280 - 25 - 42 + 150 - 200

280 - 67 + 150 - 200

280 - 67 - 50

213 - 50

= $163

3 0
3 years ago
Solve the equation by factoring: x^2-8x+15=0
blsea [12.9K]

Answer:

that is your solution

hope it helps

4 0
3 years ago
50 men working 10 hours daily can complete a job in
Sliva [168]

<h2>Given :-</h2>

  • 50 men do 10 hours work daily complete work in 20 days

  • 80 men do job in 50% time

<h2>To Find :-</h2>

  • Days required

<h2>Solution :-</h2>

  • 1 man may do job in (50 × 20) days =
  • 1 man may do job in 1000 days

Now,

  • 80 man = 1000/80 = 12.5

Now,

  • When hours reduced 50% then we will multiply days by 2
  • Total days = 12.5 × 2 = 25 days.

<h2>Hence</h2>

  • Option C is correct

\begin{gathered} \\ \end{gathered}

8 0
2 years ago
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