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Sergio039 [100]
3 years ago
12

If using the method of completing the square to solve the quadratic equation

Mathematics
1 answer:
jenyasd209 [6]3 years ago
4 0

You add half of the coefficient of x and square it.

What you do on one side,you must do it on the other.

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Write the expression <br> 3x-(2-4x) in standard form
Llana [10]
7x-2 is how it’s written in standard form
4 0
3 years ago
A May 2000 Gallup poll found that 38% of the people in a random sample of 1,012 adult Americans said that they
Alex777 [14]

Answer:

10.

x P(X)

0 0.238

1 0.438

2 0.269

3 0.055

11.

0.707

There is 70.7% chance that at least one but at most two adults in the sample believes in the ghost

12.

1.14≅1

There will be one adult out of three we expect to believe in the ghost

Step-by-step explanation:

The probability distribution is constructed using binomial distribution.

We have to construct the probability distribution of the number adults believe in ghosts out of three adults. so,

x=0,1,2,3

n=3

p=probability of adults believe in ghosts=0.38

The binomial distribution formula

nCxp^xq^n-x=3cx0.38^x0.62^3-x

is computed for x=0,1,2,3 and the results depicts the probability distribution of the number adults believe in ghosts out of three adults.

x P(X)

0 0.238

1 0.438

2 0.269

3 0.055

11.

P(at least one but at most two adults in the sample believes in the ghost )= P(x=1)+P(x=2)=0.437+0.269=0.707

P(at least one but at most two adults in the sample believes in the ghost )=70.7%

12. E(x)=n*p

here n=3 adults and p=0.38

E(x)=3*0.38=1.14

so we expect one adult out of three will believe in the ghosts.

4 0
3 years ago
Which of the following is the correct ratio for converting kilograms to grams
Brrunno [24]

Answer:

1000 Grams : 1 Kilogram or 1 Kilogram : 1000 Grams

Step-by-step explanation:

In the metric system the value of a kilogram is solved like:

Kg = \frac{g}{1000}

When converting from grams to kilograms, we solve it like:

g = \frac{kg}{0.0010000}

Let's take for example:

2 KG is how many grams?

We use the grams to kilograms formula like so:

g = \frac{2}{0.0010000}

Then we end up with:

g = 2000

6 0
3 years ago
26. Given the point A(-2,4) translate (x,y) → (x – 4, y - 3) and then reflect over the line y = -x.
Zepler [3.9K]

<em>Greetings from Brasil...</em>

Here is the graphical explanation in the annex.

A = (-2; 4)

A' = (-2 - 4; 4 - 2) = (-6; 1)

After reflection on F(X)

<h2>A'' = (-1; 6)  </h2>

7 0
3 years ago
Which of the fractions below is closest to 7?
svetoff [14.1K]

Answer:

I think that the awnser is A because I think it is

6 0
2 years ago
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