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AnnyKZ [126]
3 years ago
13

A doctor wants to know if her patients are happy with her. She decides to survey a sample of her clients. What method would be b

est for choosing a random sample that is a fair representation of her patients?
Mathematics
2 answers:
Leokris [45]3 years ago
8 0
The method should be to a<span>ssign numbers to each patient and then use a random number generator to choose one hundred patients to survey. </span>
Rudik [331]3 years ago
7 0

Answer:

A doctor wants to know if her patients are happy with her. She decides to survey a sample of her clients.

To choose a random sample from her patient list, she must choose the patients randomly. For this she can assign numbers to her patients like 1 to 300 and then randomly draw numbers from the list either by herself or by number generator. She can choose 30 to 40 percent of her patients randomly for conducting this survey.

This type of random selection is completely random and non biased.

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Explain how you would use repeated subtraction to find 8/2
galben [10]
First, you subtract 8-2, then subtract 6-2, then subtract 4-2, then subtract 2-2, then you have 0 so you count the amount of times you subtracted. In our case it would be 4 times so 8÷2=4. ;)
7 0
3 years ago
If f ( x ) = 5x^2 - 2x + 6 and g ( x ) = 4x^2 + 6x - 1,<br> then find f ( x ) + g ( x )
musickatia [10]

Answer:

9x^2+4x+5

Step-by-step explanation:

f ( x ) = 5x^2 - 2x + 6

g ( x ) = 4x^2 + 6x - 1,

Add the functions together

f(x)+ g(x) = 5x^2 - 2x + 6 + 4x^2 + 6x - 1

Combine like terms

               =9x^2+4x+5

4 0
1 year ago
The list of ordered pairs below represents a function
11111nata11111 [884]

Answer:

  • D. (-3,-4)​

Step-by-step explanation:

<h3>Given</h3>

<u>Ordered pairs </u>

  • (12, 6), (3, 1), (2,-2), (5, 10), (-8, -4) (_,_)
<h3>To find</h3>
  • The missing pair
<h3>Solution</h3>

Since it is a function, the missing pair can't repeat input values with different output, therefore only option D is unique so is the correct choice

8 0
3 years ago
A given line has the equation 10x + 2y = −2.
worty [1.4K]

The equation is \boxed{ \ y = - 5x + 12 \ or \ y = 12 - 5x} \ }

<h3>Further explanation </h3>

This case asking the end result in the form of a slope-intercept.

<u>Step-1: find out the gradient. </u>

10x + 2y = -2

We isolate the y variable on the left side. Subtract both sides by 10x, we get:

2y = - 10x - 2  

Divide both sides by two

y = -5x -1

The slope-intercept form is \boxed{ \ y = mx + c \ }, with the coefficient m as a gradient. Therefore, the gradient is m = -5.

If you want a shortcut to find a gradient from the standard form, implement this:  

\boxed{ \ ax + by = k \rightarrow m = - \frac{a}{b} \ }

10x + 2y = −2 ⇒ a = 10, b = 2

\boxed{m = - \frac{10}{2} \rightarrow m = -5}

<u>Step-2:</u> the conditions of the two parallel lines

The gradient of parallel lines is the same \boxed{ \ m_1 = m_2 \ }. So \boxed{m_1 = m_2 = -5}.

<u>Final step:</u> figure out the equation, in slope-intercept form, of the parallel line to the given line and passes through the point (0, 12)

We use the point-slope form.

\boxed{ \ \boxed{ \ y - y_1 = m(x - x_1)} \ }

Given that

  • m = -5
  • (x₁, y₁) = (0, 12)  

y - 12 = - 5(x - 0)

y - 12 = - 5x

After adding both sides by 12, the results is \boxed{ \ y = - 5x + 12 \ or \ y = 12 - 5x} \ }

<u>Alternative steps </u>

Substitutes m = -5 and (0, 12) to slope-intercept form \boxed{ \ y = mx + c \ }

12 = -5(0) + c

Constant c is 12 then arrange the slope-intercept form.

Similar results as above, i.e. \boxed{ \ y = - 5x + 12 \ or \ y = 12 - 5x} \ }

<u>Note: </u>

\boxed{Standard \ form: ax + by = c, with \ a > 0}

\boxed{Point-slope \ form: y - y_1 = m(x - x_1)}

\boxed{Slope-intercept \ form: y = mx + k}

<h3>Learn more </h3>
  1. A similar problem brainly.com/question/10704388
  2. Investigate the relationship between two lines brainly.com/question/3238013
  3. Write the line equation from the graph brainly.com/question/2564656

Keywords: given line, the equation, slope-intercept form, standard form, point-slope, gradien, parallel, perpendicular, passes, through the point, constant

7 0
3 years ago
Read 2 more answers
Whats the value of x?
coldgirl [10]
Bro the value of x is 84
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3 years ago
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