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postnew [5]
2 years ago
12

The perimeter of a square is 4/5 what is its area

Mathematics
1 answer:
34kurt2 years ago
3 0

Answer:

1/25

Step-by-step explanation:

square has 4 sides, if you add them all up you get 4/5.

1/5+1/5+1/5+1/5=4/5

so each side is 1/5

Area=length * width

A=1/5*1/5=1/25

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The amount of time a passenger waits at an airport check-in counter is random variable with mean 10 minutes and standard deviati
Stolb23 [73]

Answer:

(a) less than 10 minutes

= 0.5

(b) between 5 and 10 minutes

= 0.5

Step-by-step explanation:

We solve the above question using z score formula. We given a random number of samples, z score formula :

z-score is z = (x-μ)/ Standard error where

x is the raw score

μ is the population mean

Standard error : σ/√n

σ is the population standard deviation

n = number of samples

(a) less than 10 minutes

x = 10 μ = 10, σ = 2 n = 50

z = 10 - 10/2/√50

z = 0 / 0.2828427125

z = 0

Using the z table to find the probability

P(z ≤ 0) = P(z < 0) = P(x = 10)

= 0.5

Therefore, the probability that the average waiting time waiting in line for this sample is less than 10 minutes = 0.5

(b) between 5 and 10 minutes

i) For 5 minutes

x = 5 μ = 10, σ = 2 n = 50

z = 5 - 10/2/√50

z = -5 / 0.2828427125

= -17.67767

P-value from Z-Table:

P(x<5) = 0

Using the z table to find the probability

P(z ≤ 0) = P(z = -17.67767) = P(x = 5)

= 0

ii) For 10 minutes

x = 10 μ = 10, σ = 2 n = 50

z = 10 - 10/2/√50

z = 0 / 0.2828427125

z = 0

Using the z table to find the probability

P(z ≤ 0) = P(z < 0) = P(x = 10)

= 0.5

Hence, the probability that the average waiting time waiting in line for this sample is between 5 and 10 minutes is

P(x = 10) - P(x = 5)

= 0.5 - 0

= 0.5

3 0
3 years ago
Barak spent $20 at the arcade. this represents 10%of the money earned by working at thepizza parlor last week.
Karolina [17]
20=10%
times 10
200=100%

he earned $200 at the parlor
4 0
3 years ago
a cell phone plan offers 250 minutes each month for 15.00 dollars per month. what is the cost per minute when a person uses all
Nezavi [6.7K]
It costs 0.06 cents each minute.

Explanation : $15/250 minutes = $0.06
4 0
3 years ago
Can someone please help me?? :( I will give brainliest
Simora [160]

Answer:

I think it is d either that or b, but im more positive its d

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
the ratio of the weight of a book to the weight of a mug is 7:5 what fraction of the total weight of the book and mug is the wei
Elena-2011 [213]
12:7
because you add 7 and 5 and then there is the 7 for the book weight
7 0
2 years ago
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