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2 years ago

Very sleepy plz help, been doing these all day... question in photo

Mathematics

1 answer:

zzz [600]2 years ago

6 0

Answer:

20 40 and 90 are correct

Step-by-step explanation:

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Which graph represents the linar function y=1/3x-4?

spin [16.1K]

Answer:

(0,-4)

Step-by-step explanation:

4 0

2 years ago

The number of accidents that occur at a busy intersection is Poisson distributed with a mean of 4.5 per week. Find the probabili

Mariana [72]

Answer:

a) 0.01111

b) 0.4679

c) 0.33747

Step-by-step explanation:

We are given the following in the question:

The number of accidents per week can be treated as a Poisson distribution.

Mean number of accidents per week = 4.5

$\lambda= 4.5$

Formula:

$P(X =k) = \displaystyle\frac{\lambda^k e^{-\lambda}}{k!}\\\\ \lambda \text{ is the mean of the distribution}$

a) No accidents occur in one week.

$P(x =0)\\\\= \displaystyle\frac{4.5^0 e^{-4.5}}{0!}= 0.01111$

b) 5 or more accidents occur in a week.

$P( x \geq 5) = 1-\displaystyle \sum P(x$

c) One accident occurs today.

The mean number of accidents per day is given by

$\lambda = \dfrac{4.5}{7} = 0.64$

$P(x =1)\\\\= \displaystyle\frac{0.64^1 e^{-0.64}}{1!}= 0.33747$

5 0

2 years ago

PLEASE HELP ASAP !!

ololo11 [35]

Answer:

Step-by-step explanation:

ML is the short side of right triangle MLK. MJ is the hypotenuse of right triangle MKJ. This gives you a clue that the ratios of interest are the short side to the hypotenuse. All these right triangles are similar, so ...

ML/MK = MK/MJ . . . . . ratio of short side to hypotenuse is the same

ML·MJ = MK² . . . . . . . cross multiply

MK = √(ML·MJ) . . . . . the geometric mean of ML and MJ is MK

7 0

2 years ago

Simplify 2.1 + (-3.7m) + 1.9m - 1.4

belka [17]

Answer:

-1.8m + 0.7

Step-by-step explanation:

4 0

2 years ago

The Department of Homeland Security wants to test a computer virus that it has developed to combat hackers. They plan to test ru

ra1l [238]

Answer:

Simple random sampling

Observational study

Step-by-step explanation:

Since in the given situation it is mentioned that department wants to test the computer virus and have to run the virus on the random selected computers so here the simple random sampling would be done and based on the simple random sampling the observational study would be done

Therefore the above represent the answer

8 0

2 years ago