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2 years ago

I need help someone

Mathematics

1 answer:

allochka39001 [22]2 years ago

7 0

Answer:

There is no correlation.

Step-by-step explanation:

The points are far spread and does not give any correlation.

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Which expression has the same value as 5 + ( − 4 ) 5+(−4)?

stellarik [79]

Answer: 5+-20-4 or -24+5 or -15-4

Step-by-step explanation: (5)+(−4)(5)+(−4) 5+-20-4 -24+5 or -15-4 -19

6 0

1 year ago

-7y - 3 - 2y= -5(y + 3)

Nana76 [90]

Answer:

y=-1(1)/(5)

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

The number of failures of a testing instrument from contamination particles on the product is a Poisson random variable with a m

Mazyrski [523]

Answer:

The probability that the instrument does not fail in an 8-hour shift is $P(X=0) \approx 0.8659$

The probability of at least 1 failure in a 24-hour day is $P(X\geq 1 )\approx 0.3508$

Step-by-step explanation:

The probability distribution of a Poisson random variable X representing the number of successes occurring in a given time interval or a specified region of space is given by the formula:

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

Let X be the number of failures of a testing instrument.

We know that the mean $\mu = 0.018$ failures per hour.

(a) To find the probability that the instrument does not fail in an 8-hour shift, you need to:

For an 8-hour shift, the mean is $\mu=8\cdot 0.018=0.144$

$P(X=0)=\frac{e^{-0.144}0.144^0}{0!}\\\\P(X=0) \approx 0.8659$

(b) To find the probability of at least 1 failure in a 24-hour day, you need to:

For a 24-hour day, the mean is $\mu=24\cdot 0.018=0.432$

$P(X\geq 1 )=1-P(X=0)\\\\P(X\geq 1 )=1-\frac{e^{-0.432}0.432^0}{0!}\\\\P(X\geq 1 )\approx 0.3508$

3 0

2 years ago

from the top of a building 10m high the angle of depression of a stone lying on the horizontal ground is 60° . calculate the dis

Alja [10]

Answer:

14.29cm

Step-by-step explanation:

Height of the building=10cm

Angle of depression=60°

We are therefore asked to find the distance from the stone to the

the foot of the building;Therefore we use Tan ratio which is opp/adj;

Let the distance from the stone to the foot of the building be x;

10/x=Tan60°

10/x=1.7/1

We then cross multiply to get 1.7x=10

x=10/1.7

=10*10/1.7*10

=100/17

=14.29cm.

7 0

2 years ago

Please help I don't get it

kakasveta [241]

Answer:

tienes que hacer cuadritos

8 0

2 years ago

I need help someone​

I need help someone