Mndsndfbabndfbsdjfbhsadfbnnsd

pashok25 [27]

$3p* (2+k) = 6p + 3pk$

Subtract $6 p + 3 pk$ from the both sides:

$3p(2+k) -(6p+3pk) = 6p+3pk-(6p+3pk)$

$= 3pk(2+k) - 6p-3pk = 0$

Factor $3p(2+k) - 6p - 3k$

Factor out common term $3p$

$= 3p(k-k+2-2)$

refine:

$0 = 0$

true for all $p$

hope this helps!

3 0

3 years ago

Find the smallest value of k when 280 is a perfect square

alexandr402 [8]

Answer:

i don't know do you play free fire

4 0

2 years ago

Can someone explain to me #2 I only need #2

elena-s [515]

Answer:

in a rectangle, opposite sides are equal in length

Step-by-step explanation:

now in this question, Pythagoras theorem is being used to find the length

we know both sides by using Pythagoras theorem find third side and get the sum to find ac+bd

5 0

2 years ago

Read 2 more answers

Of 1000 randomly selected cases of lung cancer, 823 resulted in death within 10 years.

Arada [10]

Answer:

a) $0.823 - 1.96\sqrt{\frac{0.823(1-0.823)}{1000}}=0.799$

$0.823 + 1.96\sqrt{\frac{0.823(1-0.823)}{1000}}=0.847$

The 95% confidence interval would be given by (0.799;0.847)

b) $n=\frac{0.823(1-0.823)}{(\frac{0.03}{1.96})^2}=621.79$

And rounded up we have that n=622

c) $n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11$

And rounded up we have that n=1068

Step-by-step explanation:

Part a

$\hat p=\frac{823}{1000}=0.823$

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by: