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Phantasy [73]
3 years ago
6

Yesterday 6/7 of the 63 students gave their speeches how many gave their speeches

Mathematics
1 answer:
storchak [24]3 years ago
4 0
7 goes into 63 9 times so 6/7 you would take away one 9 so it would be 6 times 9 which is equal to 54

Answer: 54 students
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The rate at which customers are served at an airport check-in counter is a Poisson process with a rate of 8.1 per hour. The prob
just olya [345]

Answer:

Value of a is 0.667                      

Step-by-step explanation:

We are given the following in the question:

The rate of customer at an airport follows a Poisson distribution with

\lambda = 8.1

The normal approximation of Poisson distribution can be done in the following manner

\mu = \lambda = 8.1\\\sigma^2 = \lambda = 8.1\\\sigma = \sqrt{8.1} = 2.85

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of a such that

P(X_p > 50)=P(Z > a)

More than 50 customers per 5 hours means more than 10 customer per hour.

Thus, we can write

P( x > 10) = P( z > \displaystyle\frac{10 - 8.1}{2.85}) = P(z > 0.667)

Therefore, value of a is 0.667

4 0
3 years ago
Please help ,cant figure it out. ​
abruzzese [7]

Answer:

B. √2^5

Step-by-step explanation:

(2^½. 2^¾)²

= 2¹ . 2^(1½)

= 2^(2½)

= 2^(5/2)

=√2^5

6 0
3 years ago
Jessica rides the bus 8 4/5 miles each day.What is the total number of miles she rides in 21 days?
Nikolay [14]

Answer:

4435.2 miles gor 21 days

Step-by-step explanation:

there is 24 hours in 1 day

24 x 21 = 504

8 \frac{4}{5}  \times  504= 4435.2

6 0
3 years ago
Please can help me with this problem ? Thanks
larisa86 [58]
Order the numbers by magnitude (size) and watch the negative signs:

-12, -1, 0, 2, 15, 18

Answer: C 
7 0
3 years ago
If three dozen cookies cost $9, what is the cost per cookie? A) $0.25 B) $0.50 C) $2.25 D) $3.00
blagie [28]
A is the answer Hope this helps
5 0
3 years ago
Read 2 more answers
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