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Oxana [17]
1 year ago
15

HELP!!!

Mathematics
1 answer:
MakcuM [25]1 year ago
8 0

Answer:

based on my experience mind you're answer.

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In a research report, the researcher provides the following information: The seven men were ages 32 to 45 (M
rodikova [14]

The answer is Demographic data

The researcher includes the following material in a research report: The seven males varied in age from 32 to 45 (M = 38), had a high school education (two had high school diplomas, one had an associate degree, three had an undergraduate degree, and one had a master's degree), and had yearly incomes ranging from $20,000 to $100,000 (M = $52,000). Demographic data refers to information on the characteristics of the individuals being investigated.

What is Demographic data?

  • Demographic analysis is the examination of a population's characteristics such as age, ethnicity, and gender.
  • Demographic data is a statistical representation of socioeconomic information such as employment, education, income, marriage rates, birth and death rates, and so on.
  • Age, race, ethnicity, gender, marital status, income, education, and occupation are some examples of demographic information. With survey questions, you may quickly and efficiently collect this sort of information.

To learn more about Demographic data visit:

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8 0
1 year ago
Please help me with this
mafiozo [28]

Answer:

<h2>a. 10cm</h2><h2>b. 5 cm</h2><h2>c. 31.4 cm</h2><h2>d. 78.5 cm²</h2><h2>e. 100 cm²</h2>

Step-by-step explanation:

Let:

<em>s - </em><em>side of the square</em>

<em>d - </em><em>diameter of the circle</em>

<em>r - </em><em>radius of a circle</em>

<em>C - </em><em>circumeference of the circle</em>

<em>AC - </em><em>area of the circle</em>

<em>AS - </em><em>area of a square</em>

The formula of a perimeter of a square:

<em>P = 4s</em>

We have <em>P = 40cm.</em>

Substitute:

<em>4s = 40              </em><em>divide both sides by 4</em>

<em>s = 10 cm</em>

a.

The length of the diameter of the circle inscribed in the square is equal to the length of the side of the square.

Therefore <em>d = s → d = 10 cm.</em>

b.

The length of the circle diameter is two lengths of the circle radius.

Therefore <em>d = 2r → r = d : 2 → r = 10 : 2 = 5 cm.</em>

c.

The formula of a circumference of a circle:

<em>C = dπ.</em>

Substitute <em>d = 10cm</em>, and <em>π = 3.14.</em>

<em>C = 10(3.14) = 31.4 cm.</em>

d.

The formula of an area of a circle:

<em>AC = πr²</em>

Substitute <em>r = 5cm</em> and <em>π = 3.14</em>

<em>AC = 3.14(5²) = 3.14(25) = 78.5 cm²</em>.

e.

The formula of an area of a square:

<em>AS = s²</em>

Substitute <em>s = 10 cm</em>

<em>AS = 10² = 100 cm²</em>

6 0
4 years ago
What is the slope of a line that passes through the origin and the point (-2,1)?
Mazyrski [523]

Answer:

<em>The slope would be</em><u><em> -1/2. </em></u>

Step-by-step explanation:

Since, the midpoint of the segment joining the points P (0, -4) and B (8, 0),

<em> = </em><u><em>( 4, -2 ), </em></u>

Now, the slope of the line passes through the origin and the point ( 4, -2) is,

= <u>-1/2</u>

<h3><u>i think thats the answer</u></h3><h2><u> </u><em><u>HOPE IT HELPS YOU THOUGH</u></em></h2>
8 0
3 years ago
How many students in all played a game or read
dsp73
Dor thisadd is what u do
5 0
3 years ago
In an attempt to escape a desert island, a castaway builds a raft and sets out to sea. The wind shifts a great deal during the d
nikdorinn [45]

Answer:

R = 7,34 km

Ф = 63,43° north of east

Step-by-step explanation:

Let´s analyze each movement and find its perpendicular components. Then, we are going to add the components along the x and y axes to get the resultant and finally to calculate its magnitude and direction.

To determine the perpendicular components, we will use right triangles trigonometrics ratios.

Please see images for each displacement in attached file.

  • <u>Displacement A: 2.50 km and 45° north of west</u>

Ax= AcosФ = 2.50cos45° = 1.77 km (neg. direction)

Ay= AsenФ = 2.50sen45° = 1.77 km (pos. direction)

  • <u>Displacement B: 4.70 km and 60° south of east</u>

Bx= BcosФ = 4.70cos60° = 2,35 km (pos. direction)

By= BsenФ = 4.70sen60° = 4,07 km (neg. direction)

  • <u>Displacement C: 1.30 km and 25° south of west </u>

Cx= CcosФ = 1.30cos25° = 1,18 km (neg. direction)

Cy= CsenФ = 1.30sen25° = 0.55 km (neg. direction)

  • <u>Displacement D: 5.10 km due east (0°)</u>

Dx= DcosФ = 5.10 km (pos. direction)

Dy= DsenФ = 0 km

  • <u>Displacement E: 1.70 km and 5° east of north</u>

Ex= EsenФ = 1.70sen5° = 0,15 km (pos. direction)

Ey= EcosФ = 1.70cos5° = 1.69 km (pos. direction)

  • <u>Displacement F: 7.20 km and 55° south of west</u>

Fx= FcosФ = 7.20cos55° = 4.13 km (neg. direction)

Fy= FsenФ = 7.20sen55° = 5.90 km (neg. direction)

  • Displacement G: 2.80 km and 10° north of east

Gx= GcosФ = 2.80cos10° = 2.76 km (pos. direction)

Gy= GsenФ = 2.80sen10° = 0.49 km (pos. direction)

Now, we add the components along the x- and y- axis to find the components of the resultant (R):

Rx = Ax + Bx + Cx + Dx + Ex + Fx + Gx

Ry = Ay + By + Cy + Dy + Ey + Fy + Gy

Therefore,

Rx= (-1.77)+(2.35)+(-1.18)+(5.10)+(0.15)+(-4.13)+(2.76)

Ry= (1.77)+(-4.07)+(-0.55)+(0)+(1.69)+(-5.90)+(0.49)

<em>Note: minus (-) symbol to negative directions</em>

Rx = 3.28 km

Ry = - 6.57 km

Let´s use the Theorem of Pythagoras to find the magnitud ot the resultant:

R = \sqrt{Rx^{2} +Ry^{2} }

R =\sqrt{(3.28)^{2}+(-6.57)^{2} }

R = 7,34 km

To find the direction of the resultant:

tanФ = \frac{Ry}{Rx}

tanФ = \frac{6.57}{3.28}

tanФ = 2.00

Ф = tan-1 (2.00)

Ф = 63,43° north of east

Download pdf
3 0
4 years ago
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