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PtichkaEL [24]
4 years ago
8

HELP!!!!!plz!!!!!!ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Ugo [173]4 years ago
8 0
Is it not 2? or half?
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Assume that when adults with smartphones are randomly​ selected, 57​% use them in meetings or classes. If 8 adult smartphone use
maxonik [38]

Answer:  0.0575

Step-by-step explanation:

Binomial probability distribution :-

P(x)=^nC_xp^x(1-p)^{n-x}, where P(X) is the probability of getting success in x trials, n is the total number of trials and p is the probability of success in each trial ( in  decimal ).

Given : The probability that adults use smartphones  in meetings or classes = 0.57

Sample size : n= 8

Now, the probability that exactly 2 of them use their smartphones in meetings or classes :-

P(x)=^8C_2(0.57)^2(0.43)^{6}\\\\=\dfrac{8!}{(8-2)!2!}(0.57)^2(0.43)^{6}\\\\=0.0575067039294\approx0.0575

Hence, the required probability = 0.0575

6 0
3 years ago
Mary's job is to package kleenex boxes to ship out to sell at stores. the company
swat32

Volume is a three-dimensional scalar quantity. The number of kleenex boxes that can fit in the large box is 4096.

<h3>What is volume?</h3>

A volume is a scalar number that expresses the amount of three-dimensional space enclosed by a closed surface.

Given the larger box have a length of the side as 4 feet. Also, the kleenex box is a cube with side lengths of 3 inches. Therefore, the number of cubes that will fit is,

Number of boxes = Volume of Larger box / Volume of kleenex box

Number of box = (4 feet)³ / (3 inches)³

Number of box = (48 inches)³ / (3 inches)³

Number of box = 4096

Hence, the number of kleenex boxes that can fit in the large box is 4096.

Learn more about Volume:

brainly.com/question/13338592

#SPJ1

4 0
2 years ago
I could use alot of help on this please and thankyouuuu
kicyunya [14]

Answer:

B. Step 4 is incorrect , it should be \frac{10}{8}

Step-by-step explanation:

6x-1= -2x+9

Step 1

Collect like terms and change signs if you move anything from one side to the other; 6x+2x = 9+1

Step 2: Add like terms on both sides

8x = 10

Step 3: To remain with just x on one side, divide both sides by 8 and it becomes;

\frac{8x}{8} = \frac{10}{8}

The two 8s cancel each other and you remain with x=\frac{10}{8}

6 0
4 years ago
Which of the following is not an acceptable form of proof?
Arisa [49]
I think its  <span>B. Two-column proof 
</span>
5 0
3 years ago
Read 2 more answers
Look at The Picture Please Help!
BabaBlast [244]

Answer:

40%

Step-by-step explanation:

3/5x2=6/10

6/10x10=60/100

100-60=40

40%

5 0
4 years ago
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