3 years ago

Part A

Mathematics

2 answers:

maxonik [38]3 years ago

7 0

THe answe is 6x squared on the number line

Advocard [28]3 years ago

3 0

Angles a and 51 should be supplimential

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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

Express sum as product 18+27

geniusboy [140]

18+27
=9(2+3)
=9*5 Answer

5 0

3 years ago

Read 2 more answers

Can someone pls help me

ella [17]

$\\ \sf\longmapsto cos60=\dfrac{80}{x}$

$\\ \sf\longmapsto \dfrac{1}{2}=\dfrac{80}{x}$

$\\ \sf\longmapsto x=80(2)$

$\\ \sf\longmapsto x=160$

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3 years ago

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PLS HELP I NEED THIS FAST

nikdorinn [45]

Answer:

y=1.40x+8

Step-by-step explanation:

26=1.40x+8

18=1.40x

12=x

3 0

3 years ago

Which expression represents 7 less than the product of 11 and 4 .

ryzh [129]

The answer is (4x11)-7 i believe

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3 years ago