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chubhunter [2.5K]
3 years ago
13

Help me plz this is hard

Mathematics
1 answer:
cricket20 [7]3 years ago
3 0

you first use distributive property for the multiplication

[(2*4x)-(2*11)]+9=19

8x-22+9=19

Then, you need to leave the variable alone moving all the other numbers with the opposite operation (addition to substraction, substraction to addition, multiplication to division, division to multiplication)

8x=19+22-9

8x=(19+22)-9

8x=41-9

8x=32

Then as 8 and x are multiplying you pass it dividing

x=32/8

x=4

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The number of violent crimes committed in a day possesses a distribution with a mean of 2.8 crimes per day and a standard deviat
Deffense [45]

Answer:

The distribution is approximately normal with mean = 2.8 and standard error = 0.4

Step-by-step explanation:

We are given;

Mean; μ = 2.8

Standard deviation; σ = 4

Sample size; n = 100

Now, the central limit theorem states that the sample mean with a sample size(n) from a population mean (μ) and population standard deviation(σ) will, for large value of n, have an approximately normal distribution with mean μ and standard error as (σ/√n)

The sample size is 100 and thus it's very large because it's bigger than minimum of 30 for approximate distribution.

Thus, SE = (σ/√n) = 4/√100 = 4/10 = 0.4

Thus,from the central limit theorem I described, we can say that the distribution is approximately normal with mean = 2.8 and standard error = 0.4

8 0
3 years ago
Please help me this is the only one I got stuck on
Svetradugi [14.3K]

sorry dude I'm stupid I would help but I'm a idot

7 0
3 years ago
Seaside Bike Shop rents bikes for $10 plus 54 per hour. Jack paid $30 to rent a bike. Which equation, when solved for x, gives t
lozanna [386]
Y=54x+10
If he paid $30 it would be
30=54x + 10
4 0
3 years ago
Solve for n.<br> 11(n-1)+35=3n
kotykmax [81]

Answer:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Solution

= − 3

11−11+35=3 11+24=3

11+24=311n+24=3n11n+24=3n11+24−24=3−24 1

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3 years ago
Which of the following are solutions to the quadratic equation? Check all that
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Answer:

x=-2

Step-by-step explanation:

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3 years ago
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