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devlian [24]
4 years ago
11

Dr. Tucker and his research team are interested in how aggression changes as we age. The team will recruit 100 3-year-old childr

en and assess their levels of aggression every three years until the participants turn 21. This is an example of cross-sectional research. True or false?
Mathematics
1 answer:
Rzqust [24]4 years ago
7 0

Answer:

False

Step-by-step explanation:

A cross sectional research examines changes between different population in a specific period of time. In this case the investigation of Dr. Tucker, is a longitudinal research. This research analyses changes in the same population in different periods of time which can provide data of changes of behavior of children over the time.

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Solve this plsss..........​
kari74 [83]

Answer:

xfbxcnfcvfxfhdfxbdfhsdxcbndf

Step-by-step explanation:

4 0
3 years ago
(4+2-2)(2)-5<br> -3<br> 2.<br> 3
puteri [66]
The answer is -4 because 4+2 is equal to 6 and then 6-2 is equal to 4 and then times into the number of 2 the answer is 4x2 is equal to 8 and then minus into the negative 5 an the answer is -4.
5 0
3 years ago
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An equivalent expression for 12x+1 and 2(2x+5) please help​
zhannawk [14.2K]
<h2>Answer:</h2>

8x+9

<h2>Step-by-step explanation:</h2>

12x+1 = 2(2x+5)

<h3><em><u>Handle the brackets first</u></em></h3>

12x+1 = 4x+10

<h3><em><u>Collect like terms</u></em></h3>

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3 0
3 years ago
This figure shows circle Z with chords AB and RS . mAR=55° mRB=66° AB=8 m RS=8 m What is mRS?
Alina [70]
M AR = 55°
m RB = 66°
Like AB=8 m =RS →m RS = m AB

m AB = m AR + m RB
m AB = 55° + 66°
m AB = 121°

m RS = m AB
M RS = 121°

Answer: m RS is 121°
4 0
4 years ago
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Two triangles have the same heights. One triangle has a base length that is twice the base length of the other triangle. Are the
djyliett [7]

Answer:

Yes

Step-by-step explanation:

The formula for area of a triangle is A = (1/2)bh,

For the first triangle we can leave it in general terms, so it's area is

A = (1/2)bh, depending on what b and h are, but it doesn't matter here...

The second triangle has base that is twice the other triangles base.  Bases being multiples of each other is the definition of being proportional so the bases are proportional, an the area of the second triangle is

A = (1/2)(2b)h,   which simplifies to

   A = bh

Comparing the 2 areas, you can see that one has a multiplier of (1/2), so their areas are proportional

3 0
3 years ago
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