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pochemuha
3 years ago
5

PLEASE HELP .!!!!!!

Mathematics
2 answers:
Pani-rosa [81]3 years ago
8 0

Answer: 112

Step-by-step explanation:

15x 7+7 = 112

Amanda [17]3 years ago
7 0

Answer:

y=13.5.

Step-by-step explanation:

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Find the image of the point (2, 4) if it is move 7 steps to the left and 5 steps up.
algol13

Answer:

(-5,9)

Step-by-step explanation:

5 0
3 years ago
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A Geiger counter counts the number of alpha particles from radioactive material. Over a long period of time, an average of 14 pa
UkoKoshka [18]

Answer:

0.2081 = 20.81% probability that at least one particle arrives in a particular one second period.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

Over a long period of time, an average of 14 particles per minute occurs. Assume the arrival of particles at the counter follows a Poisson distribution. Find the probability that at least one particle arrives in a particular one second period.

Each minute has 60 seconds, so \mu = \frac{14}{60} = 0.2333

Either no particle arrives, or at least one does. The sum of the probabilities of these events is decimal 1. So

P(X = 0) + P(X \geq 1) = 1

We want P(X \geq 1). So

P(X \geq 1) = 1 - P(X = 0)

In which

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-0.2333}*(0.2333)^{0}}{(0)!} = 0.7919

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.7919 = 0.2081

0.2081 = 20.81% probability that at least one particle arrives in a particular one second period.

8 0
4 years ago
Divide. −8 3/4÷2 1/6
Lapatulllka [165]
-4 1/26
hope this helps
5 0
4 years ago
Read 2 more answers
I just need these three questions fine, they should be easy, 7th grade level
muminat

1) A graph is linear when the line on a graph is a straight line with no curves.

2) A proportional graph means that as x increases, y increases and when x decreases, y decreases and their ratio always stays the same.

3) (I don't know what type of equation you mean but this is my guess)

Division is the last step of an equation.

7 0
3 years ago
Lauren, Rachel and Becca started a business over the summer. Their income was $500. The girls put in different amounts of work,
zloy xaker [14]

Answer:

Step-by-step explanation: total income=$500

Ratio of partition of money6:3:4

( Which gives that lauren gets 6x, rachel gets 3x and Becca gets 4x)

6x+3x+4x=500

13x=$500

X=500/13 ( transposition method)

x= 38.46

So lauren gets 6(38.46)… rachel gets 3(38.46)while Becca gets 4(38.46)…

Lauren= 230.76

Rachel=115.38

Becca= 153.84

3 0
3 years ago
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