A plumber has a 2.5 meter long copper pipe. He needs to cut lengths of 60cm,35cm and 90cm

1 answer:

8 0

Hello.

The answer is 2315 cm.

To get the answer the equation is: 2500 - (60 +35 +90 )
To get 2500: 2.5 meters is 2500 cms
Then you would subtract how much he needs.

have a nice day

You might be interested in

What is the tenth digit in the quotient 120 ÷ 11

galina1969 [7]

20 is the tenth digit in the quotient

4 0

3 years ago

Read 2 more answers

What do -4 (x+7)-4 equal

Dima020 [189]

Answer:

-4x-32 Can i please get a brainliest because this correct.

Step-by-step explanation:

−4(x+7)−4

Distribute:

=(−4)(x)+(−4)(7)+−4

=−4x+−28+−4

Combine Like Terms:

=−4x+−28+−4

=(−4x)+(−28+−4)

=−4x+−32

Answer:

=−4x−32

5 0

3 years ago

If a procedure meets all of the conditions of a binomial distribution except the number of trials is not fixed, then the geomet

morpeh [17]

Answer:

The probability is 0.0428

Step-by-step explanation:

First, let's remember that the binomial distribution is given by the formula:

$P(X=k) =\left[\begin{array}{ccc}n\\k\end{array}\right] p^{k}(1-p)^{n-k}$ where k is the number of successes in n trials and p is the probability of success.

However, the problem tells us that when there isn't a number of trials fixed, we can use the geometric distribution and the formula for getting the first success on the xth trial becomes:

$P(X=x) = p(1-p)^{x-1}\\$

The problem asks us to find the probability of the first success on the 4th trial (given that the first subject to be a universal blood donor will be the fourth person selected)

Using this formula with the parameters given, we have:

p = 0.05

x = 4

Substituting these parameters in the formula and solving it, we get:

$P(X=4) = 0.05(1-0.05)^{4-1}\\P(X=4) = 0.05 (0.95)^{3}\\P(X=4) = 0.05(.8573)\\P(X=4) = 0.0428$