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2 years ago

Please teach me how to work this out?!

Mathematics

1 answer:

Olegator [25]2 years ago

5 0

Answer:

Step-by-step explanation:

1 hr=60 min

1 km=0.62137 miles

15 km/min=(15×60) km/hr=900 km/hr=(900×0.62137) miles /hr=559.233 miles/hr

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Seven customers enter a clothing store and are observed to determine if they will make a purchase. The store owner states that t

blondinia [14]

Answer: Mean = 5.25

Variance = 1.3125

Standard deviation = 1.456

Step-by-step explanation:

The mean and variance of a binomial distribution with parameters n (number of trials) and p ( the probability of getting success in each trial) is given by :-

$\text{Mean}=np\\\\\text{Variance}=np(1-p)$

Given : The total number of enter a clothing store : n=7

The probability of a customer making a purchase= 0.75

Now,

$\text{Mean}=7(0.75)=5.25\\\\\text{Variance}=7(0.75)(0.25)=1.3125\\\\\Rightarrow\ \text{Standard deviation}=\sqrt{1.3125}=1.14564392374\approx1.1456$

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3 years ago

Find the difference 3/4(3x+6)−14(5x−24)

PolarNik [594]

The answer is -271/4x + 681/2

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3 years ago

Solve for x. Round your answer to the nearest hundredth.

Vinil7 [7]

Answer:

14: 2x-1 = 3

2x=4

x=2

15:

x = 1/2500000

16: (ln(4/3))/4

17: sqrt(5e^12)

18: x = 16, -4

3 0

3 years ago

Helplsieedgoodgradeplspls

Lynna [10]

Answer:

He would need to walk the dog 6 more times because 8 times 11 is 88 and if he has already walked the dog 5 times you would subtract that from 11 to get 6. So the answer would be 6

Step-by-step explanation:

8·11= 88

11-5= 6

5 0

2 years ago

Are the ratios equivalent 16:14 64:60

RSB [31]

No, but 16/15 is equivalent

5 0

2 years ago

Read 2 more answers