3 years ago

What is the midpoint of -5.8 and -3.5 on a number line??!

Mathematics

1 answer:

lana66690 [7]3 years ago

7 0

Answer:

-4.65

Step-by-step explanation:

5.8-3.5=2.3

2.3 divided by 2=1.15

3.5+1.15=4.65

Answer: -4.65

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Sarah was thinking of a number. Sarah halves it and gets an answer of 46.5. What was the original number?

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As an estimation we are told 5 miles is 8 km. <br> Convert 30 miles to km.

sergeinik [125]

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3 years ago

X - (-20) = 5 _________________

tamaranim1 [39]

X - (-20) = 5

When you subtract a negative, change it to addition:

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Aleksandr-060686 [28]

Answer:

0.0821

Step-by-step explanation:

If the arrival rate is 50 customers per hour (60 minutes), then the expected number of customers in 3 minutes is:

$\lambda=\frac{50}{60}*3\\ \lambda=2.5\ customers/3\ minutes$

Assuming a Poisson distribution with 2.5 customers per 3 minutes, the probability that zero customers arrive for 3 minutes is:

$P(x=k)=\frac{\lambda^k*e^{-\lambda}}{k!}\\P(x=0)=\frac{2.5^0*e^{-2.5}}{0!}\\ P(x=0)=0.0821$

The probability that the bank stays empty for three minutes is 0.0821.

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