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2 years ago

14

An election ballot asks voters to select 6 city commissioners from a group of 15 candidates. In how many ways can this be done

1 answer:

poizon [28]2 years ago

4 0

This is a combination since the order doesn't matter
C(15, 6) = (15 * 14 * 13 * 12 * 11 * 10)/(6 * 5 * 4 * 3 * 2 * 1)
C(15, 6) = 3603600/720
C(15, 6) = 5005 different combinations of votes

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The nicotine content in a single cigarette of a particular brand has a distribution with mean 0.4 mg and standard deviation 0.1

a_sh-v [17]

Answer:

Step-by-step explanation:

For this case we can define the random variable of interest as: "The nicotine content in a single cigarette " and for this case we know the following parameters:

$\mu = 0.4, \sigma = 0.1$

And for this case we select a sample size of n =100 and we want to find the following probability:

$P(\bar X$

And for this case we can use the z score formula given by:

$z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And replacing we got:

$z= \frac{0.38-0.4}{\frac{0.1}{\sqrt{100}}}= -2$

And we can find the required probability with the normal standard table and we got:

$P(z$

8 0

3 years ago

7n+12=1/2(14n+24)<br><br><br> NEED ANSWER ASAP

Angelina_Jolie [31]

Answer:

n = all real numbers

Step-by-step explanation:

7n+12=1/2(14n+24)

multiply each side by 2

2(7n+12)=2*1/2(14n+24)

distribute

14n+24 = 14n + 24

subtract 14n from each side

14n-14n+24 = 14n-14n + 24

24=24

this is always true

n = all real numbers

3 0

2 years ago

Darla wants to buy a dress for $20 and some shirts for $12 each. She has $80. Write and solve an inequality to find the number o

marishachu [46]

Answer:

5 shirts for 12 is 60 dollars

20 dollar dress plus 60 is 80

Step-by-step explanation:

4 0

3 years ago

Using transformations

Delvig [45]

I have the graphed answer right here

4 0

2 years ago

Math is not my strong point..

Leya [2.2K]

Answer: 16 in

Explanation:

PQ/QR = PT/TS

PQ/4 = 12/3
PQ x 3 = 12 x 4 (cross multiply)
PQ x 3 = 48
PQ = 48/3
PQ = 16

6 0

3 years ago

Read 2 more answers