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Lorico [155]
3 years ago
9

A journalism teacher wants to determine

Mathematics
2 answers:
Darina [25.2K]3 years ago
4 0

Answer:

the representative sample in this situation is 120students in 4 different classes

yawa3891 [41]3 years ago
3 0

Answer:

Randomly choose 40 kids to survey.

Step-by-step explanation:

This is for every one who needs the answer to this question but cant get it so here you go!

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The top of a cylinder is sliced off by a plane. Determine volume of the bottom portion of the cylinder.
notka56 [123]

Answer:

Volume of bottom of cylinder = Volume of entire cylinder - Volume of top of cylinder

Step-by-step explanation:

Here we have the volume of a cylinder given by

Volume of a cylinder = πr²h

Where the cylinder is cut by a plane into portions of heights, bottom a and top b we have

Height of bottom of is then

Height = h - b

Therefore, volume of bottom of cylinder = π·r²h = π·r²(h - b)

Volume of bottom of cylinder = π·r²·h - π·r²b

Volume of bottom of cylinder = Volume of entire cylinder - Volume of top of cylinder.

8 0
3 years ago
What is the range of the relation?<br> (-3,-2,0,2)<br> (-3,3)<br> (-4,-2,1,2)<br> (-4,-3,-2,1,0,2)
9966 [12]

Answer:

jn8huuojgui

Step-by-s

3 0
2 years ago
Darla is taking a survey at her school. She finds that 20 out of 100 students have fish as pets. This means that her experimenta
Arisa [49]

Answer:

The second option

Step-by-step explanation:

This is because the more samples she has, the closer her experimental probability will be to the real value.

6 0
3 years ago
Lines x and y are parallel.
densk [106]

On the bottom line, the 106 and number 1 make a straight line and needs to equal 180 degrees.

This means number 1 = 180-106 = 74 degrees.

Because x and y are parallel, the top outside angle is the same as number 1.

6x +8 = 74

Subtract 8 from both sides:

6x = 66

divide both sides by 6:

x = 66 / 6

x = 11

Now you have x, replace x in the equation for 7x-2 to find that angle:

7(11) -2 = 77-2 = 75 degrees.

The three inside angles need to equal 180 degrees.

Angle 2 = 180 - 74 - 75 = 31 degrees.

7 0
3 years ago
Read 2 more answers
Determine a25
posledela
I believe it’s 16/21 but I’m not sure.

4 0
3 years ago
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