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coldgirl [10]
4 years ago
7

An equation is shown below: −2(4x − 1) − 7 = 5 Which statement shows a correct next step in solving the equation? (1 point)

Mathematics
1 answer:
Paha777 [63]4 years ago
6 0

Answer:

B

Step-by-step explanation:

Add both sides of the equation by 7, which satisfies the definition of the addition property of equality.

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According to the last census (2010), the mean number of people per household in the United States is LaTeX: \mu = 2.58 Assume a
Veseljchak [2.6K]

Answer:

P(2.50 < Xbar < 2.66) = 0.046

Step-by-step explanation:

We are given that Population Mean, \mu = 2.58 and Standard deviation, \sigma = 0.75

Also, a random sample (n) of 110 households is taken.

Let Xbar = sample mean household size

The z score probability distribution for sample mean is give by;

             Z = \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

So, probability that the sample mean household size is between 2.50 and 2.66 people = P(2.50 < Xbar < 2.66)

P(2.50 < Xbar < 2.66) = P(Xbar < 2.66) - P(Xbar \leq 2.50)

P(Xbar < 2.66) = P( \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } < \frac{2.66-2.78}{\frac{0.75}{\sqrt{110} } } ) = P(Z < -1.68) = 1 - P(Z  1.68)

                                                              = 1 - 0.95352 = 0.04648

P(Xbar \leq 2.50) = P( \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } \leq \frac{2.50-2.78}{\frac{0.75}{\sqrt{110} } }  ) = P(Z \leq  -3.92) = 1 - P(Z < 3.92)

                                                              = 1 - 0.99996 = 0.00004  

Therefore, P(2.50 < Xbar < 2.66) = 0.04648 - 0.00004 = 0.046

7 0
3 years ago
How does identifying the part in the whole help you write the percent proportion
julia-pushkina [17]
"part/whole is equal to percent proportion over 100%"
5 0
4 years ago
PLEASE HELP
jasenka [17]

Answer:

2.The set of all values for output of a function. 4.The values for the dependent variable. And 6.The set of all y values.

Step-by-step explanation:

Domain is the input of the function and is also the independent variable, as for the range is the output and dependent variable. Given a function f , the set x values (inputs) is the domain of f , and the set y values ( outputs ) is the range of f . The domain of a function f is all of the values for which the function is defined. For instance, 1x is not defined when x=0 . Also, √x is not defined when x is negative.

(I’m also just learning this so I apologize if I am incorrect. I try my best.)

3 0
3 years ago
Select other ways to express 10². Mark all that apply.
Elanso [62]
F and D is the answer 
hope this helps 
have a good day


7 0
4 years ago
Read 2 more answers
A battery in a laptop computer degrades by 0.5% per recharge. If the initial capacity is 80Wh of charge, how may recharge cycle
Tema [17]

Answer: 76Wh

Step-by-step explanation:

Basically all you have to do to find the answer is multiply 80 by 0.05. Then after that you subtract 80 by the answer you got. That's pretty much it.

     80

<u>x 0.05</u>

       4

   80

<u>-     4</u>

76

8 0
4 years ago
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