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3241004551 [841]
3 years ago
12

Martina read that approximately 10% of all people are left-handed. She wants to design a simulation to approximate the probabili

ty of selecting exactly 2 right-handed people when 3 people are randomly selected.
Martina spins the arrow on the spinner 3 times and records the resulting letters. Martina performs the simulation 30 times. The results of the simulation are shown.

RRR RLR RRR RRL RRR RRR
RRR RRR RRR LRR RRR RRR
RRR RRR RRR RRR RLR LRL
RRR RRL RRR RRR LLR RRR
RRR RRR LRR RRR RRR RRR
Based on the results of this simulation, when 3 people are randomly selected, exactly 2 right-handed people are selected approximately _______ of the time. Question 3 options:

10%


15%


20%


25%
Mathematics
2 answers:
marta [7]3 years ago
8 0

Answer:

20

Step-by-step explanation:

Ilia_Sergeevich [38]3 years ago
7 0

Answer:

Um whats the RRRRRRRR RRR RRR RRRR RRR RRR RRRR RLR LRL RRR RRR

Step-by-step explanation:

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The length of the hypotenuse of the right triangle is 25 cm, the length of one of the legs is 10 cm. What is the length of the s
sergejj [24]

Answer:

\large\boxed{AD=21\ and\ CD=2\sqrt{21}}

Step-by-step explanation:

Look at the picture.

Use the Pythagorean theorem for calculate the length of CA:

CA^2+CB^2=AB^2

We have

CA=x,\ CB=10,\ AB=25

Substitute:

x^2+10^2=25^2

x^2+100=625             subtract 100 from both sides

x^2=525\to x=\sqrt{525}\\\\x=\sqrt{25\cdot21}\\\\x=\sqrt{25}\cdot\sqrt{21}\\\\x=5\sqrt{21}\ cm

ΔADC and ΔACB are similar. Therefore the corresponding sides are in proportion:

\dfrac{AD}{AC}=\dfrac{AC}{AB}

We have:

AD=y,\ AC=5\sqrt{21},\ AB=25

Substitute:

\dfrac{y}{5\sqrt{21}}=\dfrac{5\sqrt{21}}{25}

\dfrac{y}{5\sqrt{21}}=\dfrac{\sqrt{21}}{5}              cross multiply

5y=5(\sqrt{21})^2            divide both sides by 5

y=21\ cm

If you mean the length of segment CD, then use the proportion:

\dfrac{CD}{AD}=\dfrac{CB}{CA}

Substitute:

\dfrac{CD}{21}=\dfrac{10}{5\sqrt{21}}\\\\\dfrac{CD}{21}=\dfrac{2}{\sqrt{21}}\qquad\text{cross multiply}\\\\CD\sqrt{21}=42\qquad\text{multiply both sides by}\ \sqrt{21}\\\\21CD=42\sqrt{21}\qquad\text{divide both sides by 21}\\\\CD=2\sqrt{21}\ cm

3 0
4 years ago
Which expression is equivalent to 8 square root 6 ?
LiRa [457]

Answer:

(2.13982638787^3) x 2

4 0
3 years ago
Let h(x)=x^2+1<br> h(h(h(3)))<br><br> I got the answer 10202
pashok25 [27]

Answer: 10202

Step-by-step explanation:you are right! I’m pretty sure!

H(3)=10

H(10)=101

H(101)= 10202

6 0
3 years ago
Consider the following system of equations 2x+3y=45 x+y=10 what is the x value of the solution for this system
scZoUnD [109]
2x + 3y = 45
x + y = 10......y = 10 - x

2x + 3(10 - x) = 45
2x + 30 - 3x = 45
-x + 30 = 45
-x = 45 - 30
-x = 15
x = -15 <====

and y = 25
3 0
3 years ago
Read 2 more answers
Given a line segment that contains the points A,B, &amp; C in order, if AB = x + 12, and BC = 2x - 4, and AC = 26, find x.
Troyanec [42]

Answer:

x = 6

Step-by-step explanation:

If A, B and C lies on a straight line in order, then;

AB+BC = AC

x+12+2x-4 = 26

x+2x+12-4 =26

3x+8 = 26

3x = 26-8

3x = 18

x = 18/3

x = 6

Hence the value of x is 6

4 0
3 years ago
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