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2 years ago

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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.

1 answer:

zysi [14]2 years ago

5 0

Answer:

Simple random sampling

Step-by-step explanation:

Hope this work :)

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Help Please!!! 20 points!

Mazyrski [523]

-6/16.................brainilyst???? plz シ

3 0

2 years ago

A miniature quadcopter is located at xi = −1.75 m and yi = −5.70 m at t = 0 and moves with an average velocity having components

Black_prince [1.1K]

The quadcopter's average velocity is given in terms of change in position by

$\vec v_{\rm av}=\dfrac{\Delta x}{\Delta t}\,\vec\imath+\dfrac{\Delta y}{\Delta t}\,\vec\jmath$

where $\Delta x=x_f-x_i$ , the difference in the quadcopter's final and initial positions and $\Delta t=(1.60-0)\,\mathrm s=1.60\,\mathrm s$ .

The $x$ -component of the average velocity is 2.70 m/s, so

$2.70\dfrac{\rm m}{\rm s}=\dfrac{x_f-(-1.75\,\mathrm m)}{1.60\,\rm s}\implies \boxed{x_f=2.57\,\mathrm m}$

and the $y$ -component is -2.50 m/s, so

$-2.50\dfrac{\rm m}{\rm s}=\dfrac{y_f-(-5.70\,\mathrm m)}{1.60\,\rm s}\implies\boxed{y_f=-9.70\,\mathrm m}$

4 0

2 years ago

Solve the division equation using the model. (1 point)

Nesterboy [21]

Answer:

3. 16

Explanation:

Factor the numerator and denominator and cancel the common factors.

5 0

2 years ago

Which of the following is an extraneous solution of (45-3x)^((1)/(2))=x-9

Anna007 [38]

Answer:

c x =3

Step-by-step explanation:

5 0

2 years ago

the volumes of two spheres are 729 in3 and 27 in3. what is the ratio of their radii, rounded to the nearest whole number?

MaRussiya [10]

The volumes of spheres are proportional to R³. So their 'R's
are proportional to ∛their volumes.

(729/ 27) = 27

∛27 = <u>exactly 3</u> . No rounding required.

5 0

2 years ago