4 years ago

Can someone pls help me

Mathematics

1 answer:

Studentka2010 [4]4 years ago

5 0

Answer:

a. 12 / 50 = 0.24 or 24%; b. 21 / 50 = 0.42 or 42%

Step-by-step explanation:

1. to find the estimated probability that it will take at least 5 patients to find who it isn't effective on, count the outcomes of EEEE. this means that it was effective on 4 patients, therefore requiring a 5th patient to find the noneffective person.

a. 12 / 50 = 0.24 or 24%

2. to find the estimated probability that it will be effective on exactly 3/4, look for boxes with 3 E's and 1 N (in any order)

b. 21 / 50 = 0.42 or 42%

hope this helps :)

You might be interested in

Two baseball teams, Team A and Team B need to play a series of games. The series end either if a team wins two consecutive games

Nimfa-mama [501]

Answer:

Step-by-step explanation:

The Series,The Games,and the amount of games to play

7 0

3 years ago

I can not understand math

Fed [463]

I cant see the picture could u please post another one?

5 0

3 years ago

Is (5x+4) a factor of (-21x^2-15-40x+5x^3

Tamiku [17]

Answer:

No. It is not.

Step-by-step explanation:

Dividing 5x³+21x²-40x-15 by 5x+4 gives x²+5x-4 with a remainder. Which means, 5x+4 is not a factor of 5x³+21x²-40x-15

6 0

3 years ago

Which quadratic equation equation is equivalent to (x^2-1)^2 -11(^2-1) +24=0

cluponka [151]

$(x^2-1)^2-11(x^2-1)+24=0$

Use substitution: $x^2-1=t$

$t^2-11t+24=0\\\\t^2-8t-3t+24=0\\\\t(t-8)-3(t-8)=0\\\\(t-8)(t-3)=0\iff t-8=0\ \vee\ t-3=0\\\\t=8\ \vee\ t=3$

<span>we're going back to substitution:

$x^2-1=8\ \vee\ x^2-1=3\ \ \ \ |add\ 1\ to\ both\ sides\ of\ the\ equations\\\\x^2=9\ \vee\ x^2=4$

therefore

$x=\pm\sqrt9\ \vee\ x=\pm\sqrt4\\\\\boxed{x=-3\ \vee\ x=3\ \vee\ x=-2\ \vee\ x=2}$
</span>

6 0

3 years ago

Read 2 more answers

Use the f(x) given below to determine the transformed functions. f(x) = 3x + 1 f(x + 2) = f(x) + 2 = pls help

Katyanochek1 [597]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers