Ask question

Ask question

All categories

Vera_Pavlovna [14]

3 years ago

7

It takes a boat going upstream 5 hours to cover the same distance, as it would cover in 3 hours going downstream. What is the sp

eed of the boat if the speed of the current is 2 kilometers per hour?

1 answer:

Vaselesa [24]3 years ago

8 0

Answer: 15 kilometers per hour

Step-by-step explanation:

You might be interested in

What value of x makes this equation true?

Softa [21]

Well you gotta find out what x means

3 0

2 years ago

Help help help help help

Dafna1 [17]

Answer:

Step-by-step explanation:

1. no

2. yes

3. yes

4. yes

5. 5.2

6. 4.5

7. 2.5

8. 16

8 0

2 years ago

graph of a function is alone that passes through the points (0,1) and (3,10) write an equation in the form y=Mx+b. For this func

nadya68 [22]

Answer:

y = 3x + 1

Step-by-step explanation:

(0,1) so that is the b

the rate of change is 9/3 so the m is 3

8 0

2 years ago

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

photoshop1234 [79]

Answer: 0.1353

Step-by-step explanation:

Given : The mean of failures = 0.025 per hour.

Then for 8 hours , the mean of failures = $\lambda=8\times0.25=2$ per eight hours.

Let X be the number of failures.

The formula to calculate the Poisson distribution is given by :_

$P(X=x)=\dfrac{e^{-\lambda}\lambda^x}{x!}$

Now, the probability that the instrument does not fail in an 8-hour shift :-

$P(X=0)=\dfrac{e^{-2}2^0}{0!}=0.1353352\approx0.1353$

Hence, the the probability that the instrument does not fail in an 8-hour shift = 0.1353

7 0

2 years ago

What is a rational number

dsp73

Anything except pi is a rational number. So 9 and 7/10 is one or it could be a whole number

7 0

3 years ago