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olasank [31]
3 years ago
13

In the following equations solve for x2(x - 1) = 16(3×1) - (5=86) -10​

Mathematics
1 answer:
lara31 [8.8K]3 years ago
6 0

Step-by-step explanation:

2(X-1)=16

2X-2=16

2X=16+2

X=18÷2

X=9

I don't understand (3×1)-(5=86)-10

I think it is wrong or sth I don't know!

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Nine percent of americans say they are well informed about politics in comparison to most people. You randomly sample 200 americ
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Answer:

Step-by-step explanation:

Using normal distribution

z = (x - mean) / standard deviation

Nine percent of americans say they are well informed about politics in comparison to most people.

That means probability of success is p =9/100 = 0.09,

then probability of failure is

q = 1-p =1 -0.09= 0.91

n = number of sample = 200

x=(8% of 200) = 0.08×200 =16

mean = np = 200×0.09= 18

Standard deviation = npq = 200×0.09×0.91= 16.38

We are looking for the probability that less than 8% of the people sampled will answer yes to the question

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P (x greater than 16) =P(x lesser than/equal to 15)

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Looking at the normal distribution table

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5 0
3 years ago
The manager at Gabriel's Furniture Store is trying to figure out how much to charge for a bookshelf that just arrived. The books
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First: markup rate × wholesale price = amount of markup

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The retail price of the chair should be <span>$167.40</span>.

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astra-53 [7]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
What is the constant of variation, k,
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The K-constant variation is the factor of the increase-decrease relationship between the x-variable and y-variable which can be stated as y=k*x or x=y/k<span>. For example, if y variable equal 5 and the x variable equal 2 then the k-constant variation equal 2 (calculation y=k*x --> 5=2*2.5). This constant shows the relationship between the variables.</span>
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