2 years ago

Help please help please

Mathematics

2 answers:

eduard2 years ago

8 0

Answer:

$option \ C$ $3\frac{1}{3}$

Step-by-step explanation:

$\frac{|2a| - b}{3} \ , \ given \ a = \ 7 \ , \ b \ =\ 4\\\\\frac{|2 \times 7| - 4}{3} = \frac{14 - 4}{3} = \frac{10}{3} = 3\frac{1}{3}$

777dan777 [17]2 years ago

7 0

The answer is c my guy

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ArbitrLikvidat [17]

Answer:

81.8%

Step-by-step explanation:

Mean = $\mu = 40$

Standard deviation = $\sigma = 5$

Now we are supposed to find out what percent of the numbers fall between 35 and 50

$z = \frac{x-\mu}{\sigma}$

Substitute the values

$z = \frac{x-40}{5}$

Now for P(35<x<50)

Substitute x = 35

$z = \frac{35-40}{5}$

$z =-1$

Substitute x = 50

$z = \frac{50-40}{5}$

$z =2$

So, P(-1<z<2)

P(z<2)-P(z<-1)

=0.9772-0.1587

=0.8185

= $0.818 \times 100$

=81.8%

Hence 81.8% percent of the numbers fall between 35 and 50

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2 years ago

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Gnom [1K]

The answer is 6/40. All the others equal 1/5.

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2 years ago

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2 years ago

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Illusion [34]

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2 years ago

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3 years ago

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