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babymother [125]
3 years ago
9

A teacher asks students to list the math lessons they learned on nine random school days in the past month. She evaluates the st

udents’ performance on this assignment to get a general picture of how well students are taking notes. This teacher’s method is an example of systematic random sampling. simple random sampling. convenience sampling. stratified sampling.
Mathematics
2 answers:
leonid [27]3 years ago
5 0

This teacher’s method is an example of - simple random sampling.

Simple random sampling or abbreviated to SRS can be defined as a 'n' size  sample; consisting of 'n' individuals. These samples are chosen from a population in such a way that every set of individuals gets an equal chance get selected for being a sample.

Fittoniya [83]3 years ago
4 0
Simple random sampling.
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Variable
umka2103 [35]

Answer:

true for number 1  and for number 2 It is not thats the wrong answer the real answer is 13 because 10 11 12 13

Step-by-step explanation:

7 0
3 years ago
The cost of breakfast cereal is Rs for 1 kg Calculate how much 25<br>breakfast cereal will cost.​
Irina-Kira [14]

Answer:

25 gram = 1000\35 rs

Step-by-step explanation:

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6 0
3 years ago
Suppose a college student pays $750 for tuition fees. However, she also has to pay $300 for her textbooks (ouch!). What percent
Shalnov [3]

Answer:

Total costs = $700 + $300 = $1000.

 $300 / $1000 = 0.3 = 3%

Step-by-step explanation:

3 0
3 years ago
Solve the equation 4 x minus 7 space equals space 45 for x.
zimovet [89]

Answer:

x = 13

Step-by-step explanation:

For this problem, we will simply uses properties of addition and multiplication to isolate the x variable for the following equation.

4x - 7 = 45

Now consider the following. First, we must isolate the x term by adding 7 to both sides.

4x - 7 = 45

4x -7 +7 = 45 +7

4x = 52

Second, let's further isolate x by multiplying both sides by 1/4 to create a coefficient of 1 Infront of the x variable.

4x = 52

(1/4) * 4x = 52 * (1/4)

x = 13

Hence, we have solved the equation 4x-7=45 where x=13.

Cheers.

4 0
2 years ago
Which special case is represented by x? - 121?
marissa [1.9K]

Answer:

A. the difference of two squares

Step-by-step explanation:

Please use the symbol " ^ " to indicate exponentiation.

Then we have x^2 - 11^2, which is the difference of two squares:

x^2 is a square, the square of x; and 11^2 is a square, the square of 11.

A. the difference of two squares

Note that a "difference of squares" is easily factored:

a² - b² = (a - b)(a + b)

and so your x² - 11² factors as follows:  (x - 11)(x + 11)

7 0
3 years ago
Read 2 more answers
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