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MaRussiya [10]
3 years ago
7

Help me out this is due at midnight along with like 10 other assignments

Mathematics
2 answers:
kiruha [24]3 years ago
5 0
A) y=1/2x+3 and y-1/2x=3
B)y=-4 ( for both forms)
C) y=3/4x+2 and y-3/4x=2
D)y=3x-5 and y-3x=-5
otez555 [7]3 years ago
4 0
Here are the answers along with the work on how i got the answers so you can understand the topic better :)

You might be interested in
Ruslan reads 1/3 of a book every day. He needs to read 4 books for class. HOw long would it take him to read 4 books?
Korolek [52]

It would take him 12 days.


1/3 x 3 = 3

3x4=12
5 0
2 years ago
The number of bank robberies that occur in Lagos is modeled to be Poisson distributed with mean of 1.8 per day. Find the probabi
cupoosta [38]

The Poisson distribution is a discrete distribution that calculates the likelihood that a certain number of events will occur within a certain amount of time.

The probability of getting exactly three robberies in a day is 0.1607.

<h3>What is meant by poison distribution?</h3>

The Poisson distribution is a discrete probability distribution used in probability theory and statistics to express the likelihood that a given number of events will occur within a specified time or space interval if they occur at a known constant mean rate and regardless of the interval since the last event.

The Poisson distribution is a discrete distribution that calculates the likelihood that a certain number of events will occur within a certain amount of time.

In the poison distribution a discrete random variable X has the following probability mass function,

$P(X=x)=\frac{e^{-\lambda} \cdot \lambda^x}{x !}$, where $\lambda$ is the mean of the distribution and $x=0,1,2,3 \ldots \ldots$

Given that $\lambda=1.8$

The required probability, $P(X=3)=\frac{e^{-1.8} .(1.8)^3}{3 !}=0.1607$

Therefore, the probability of getting exactly three robberies in a day is = 0.1607.

To learn more about poison distribution refer to:

brainly.com/question/9123296

#SPJ9

6 0
1 year ago
Show that cos2x=cosx
PSYCHO15rus [73]

cos (2x) = cos x

2 cos^2 x -1 = cos x   using the double angle formula

2 cos ^2 x -cos x -1 =0

factor

(2 cos x+1) ( cos x -1) = 0

using the zero product property

2 cos x+1 =0    cos x -1 =0

2 cos x = -1       cos x =1

cos x = -1/2       cos x=1

taking the arccos of each side

arccos cos x = arccos (-1/2)         arccos cos x = arccos 1

x = 120 degrees   x=-120   degrees           x=0

remember you get 2 values ( 2nd and 3rd quadrant)

these are the principal values

now we need to add 360

x = 120+ 360n      x=-120+ 360n      x = 0 + 360n  where n is an integer


3 0
3 years ago
The probability that a worker with occupational exposure to dust contracts a lung disease is 0.2. three such workers are checked
Elena-2011 [213]

Answer:

i think b. at least one of them contracted a lung disease

5 0
2 years ago
Hey please answer the questions on attachment, thank you very much- i need it in 10 minutes and am completely clueless.
nevsk [136]

Answer:

5x+17

Step-by-step explanation:

2(x+7) + 3(x+1)

  1. Distribute(Expand) -> 2x+14 + 3x+3
  2. Simplify by combining like terms -> 5x+17
7 0
3 years ago
Read 2 more answers
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