3 years ago

I need help with this pls

Mathematics

1 answer:

hodyreva [135]3 years ago

4 0

Answer:

if it a worksheet search the question online and the answer key comes up

Step-by-step explanation:

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The school currently has 30 classrooms. with the addition there will be 40 classrooms. What percentage of the current number of

Verizon [17]

10% if it started with 30 than it ends with 40 10% must have been added

8 0

3 years ago

Answer all 3 please will mark brainliest

denis-greek [22]

Answer:

1) 9450 = 21n

2) 9450/21 = 21/21n

450 = n

3) you can check the answer by multiplying 450 by 21

Step-by-step explanation:

hope this helped

let me know if I am incorrect

6 0

3 years ago

Read 2 more answers

A store opens at 8am. From 8 until 10 customers arrive at a Poisson rate of four an hour. Between 10 and 12, they arrive at a Po

SVETLANKA909090 [29]

Answer:

The probability distribution of the number of customers that enter the store on a given day is:

$P(x=k)=\frac{57^ke^{-57}}{k!}$

Step-by-step explanation:

To calculate a parameter for the given day, we have to calculate what is the average arrival rate for the day.

This can be done with the data given:

1) From 10 to 12, 8 arrival/hour: 16 expected arrivals in this period

2) From 12 to 2, 8 to 12 arrival/hour (average: 10 arrivals): 20 expected arrivals in this period.

3) From 2 to 5, from 10 to 4 arrival/hour (average: 7 arrivals): 21 expected arrivals in this period.

The total expected arrivals in a day are: 16+20+21=57 arrivals/day.

Then, the probability distribution of the number of customers that enter the store on a given day is:

$P(x=k)=\frac{57^ke^{-57}}{k!}$

5 0

3 years ago

The water level is a number that indicates whether the level is above or below normal using positive or negative values.

Georgia [21]

Answer:

-3.85 feet

Step-by-step explanation:

-2.8 feet + 1/2(2.1) = 1.05 as the stream is more than previous then we must subtract to find previous = -2.8 - 1.05 = -3.85 feet

7 0

2 years ago

Can someone please help me and explain it?

Georgia [21]

Step-by-step explanation:

3x<-5+10

3x<+5

x<5/3

hope it helps!

4 0

3 years ago