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3 years ago

A doctor compiles a numbered list of all his 350 patients. He selects every 25th patient to receive a survey after

Mathematics

1 answer:

Vinil7 [7]3 years ago

4 0

Answer: This does not represent an SRS because each group of patients chosen does not have an equally likely chance of being chosen.

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the ratio of apples to oranges in a fruit basket is 12:4 if there are 7 oranges in the fruit basket then how many apples and ora

Ugo [173]

Just simple proportions:

12(apples) x(apples)
-------------- = --------------
4(oranges) 7(oranges)

12*7 = 84
84/4 = 21

There are 21 apples + 7 oranges = 28 apples and oranges!

7 0

3 years ago

Tyler wrote the function f(x)=25x–15 to find the amount of money he would make after washing x cars. Select all of the values be

SVETLANKA909090 [29]

The answer is A and E

8 0

3 years ago

A cell phone package charges $39 even if 0 minutes are used during the month. Each additional minute of talk time adds $0.07.

Orlov [11]

Answer: the slope intercept form for this situation is y = 0.07x + 39

Step-by-step explanation:

The cell phone package charges $39 even if 0 minutes are used during the month. This means that the package has a constant charge of $39.

Each additional minute of talk time adds $0.07. Assuming x additional minutes of talk time is made, the total cost of x additional minutes of talk time would be

0.07x + 39

Let y represent the total cost of x additional minutes, then

y = 0.07x + 39

The equation for the slope intercept form is expressed as

y = mx + c

Where

m = slope

c = intercept.

Comparing with our equation,

The slope is 0.07 and the intercept is 39

7 0

3 years ago

What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the

marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

$\sum_{i=1}^n x_i = n \bar x$

So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

$\dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556$ cm

7 0

3 years ago

What is the slope of a line of best fit if its equation is y = −2x + 3?

serg [7]

-2. or otherwise put as -2/1

8 0

3 years ago

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