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Strike441 [17]
2 years ago
5

53:24

Mathematics
1 answer:
brilliants [131]2 years ago
3 0

Answer:

25

Step-by-step explanation:

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When Samuel commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 32 minutes and a
k0ka [10]

Answer:

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

And we can find the nnumber of deviations from the mean for each limit given:

z_1 = \frac{17-32}{5} = -3

z_2= \frac{47-32}{5} = 3

So we are 3 deviation from the mean and using the empirical rule we know that within 3 deviations from the mean we have 99.7% of the values

Step-by-step explanation:

Let X the random variable that represent the amount of time it takes him to arrive, and for this case we know the distribution for X is given by:

X \sim N(32,5)  

Where \mu=32 and \sigma=5

We want to find this probability:

P(17

And we can use the z score formula given by:

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

And we can find the nnumber of deviations from the mean for each limit given:

z_1 = \frac{17-32}{5} = -3

z_2= \frac{47-32}{5} = 3

So we are 3 deviation from the mean and using the empirical rule we know that within 3 deviations from the mean we have 99.7% of the values

8 0
2 years ago
Use the equation to complete the table.
RideAnS [48]
For number 2 problem:
10x=5y
15x=7.5y
20x=10y

For problem3:
3x=1.5y
4x=2y
5x=2.5y

6 0
3 years ago
Read 2 more answers
Factor 8x^2-27 show all steps
Olenka [21]
Solutions 

Factor <span>8x</span>²<span>−27

</span><span>=<span>8x</span></span>²<span>−<span>27 

You can not factor </span></span><span>8<span>x</span></span>²−<span>27</span>
8 0
3 years ago
Alistair and Jason both deposited $500 into their bank accounts. Alistair earned 2.5% simple interest per year. Jason earned 4.5
Vinil7 [7]

Answer:

  • $40

Step-by-step explanation:

<u>The difference in interest amount is:</u>

  • $500*4*(4.5 - 2.5)/100 = $40

Jason received $40 more than Alistair

4 0
2 years ago
Mr sasi paid $152 for a pair of shoes and a belt. The pair of shoes cost 7 times as much as belt.he also bought a shirt which co
astra-53 [7]

Hey there!!

Let us take the cost of the belt as ' x '

Then, the cost of the shoes would be ' 7x '

Cost of the shirt would be ' x + 45 '

Cost of belt + cost of shoes = 152

x + 7x = 152

8x = 152

x = 152 / 8

x = 19

Cost of belt = $19

cost of shirt = 19 + 45

= $64

Hope helps!

6 0
3 years ago
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