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3 years ago

8

The population of Springdale increased by 20% in ten years. The population now is 24,000 people. What was the population ten yea

rs ago?

1 answer:

Dahasolnce [82]3 years ago

5 0

120000 is your answer because if you go to a calculator and type in 24000 divided by 20% then it will give you 120000.

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a bag contains eleven counters. five are white. a counter is taken out the bag and is not replaced. a second counter is taken ou

Fed [463]

Answer:

$\displaystyle P(A)=\frac{6}{11}$

Step-by-step explanation:

<u>Probabilities</u>

The question describes an event where two counters are taken out of a bag that originally contains 11 counters, 5 of which are white.

Let's call W to the event of picking a white counter in any of the two extractions, and N when the counter is not white. The sample space of the random experience is

$\Omega=\{WW,WN,NW,NN\}$

We are required to compute the probability that only one of the counters is white. It means that the favorable options are

$A=\{WN,NW\}$

Let's calculate both probabilities separately. At first, there are 11 counters, and 5 of them are white. Thus the probability of picking a white counter is

$\displaystyle \frac{5}{11}$

Once a white counter is out, there are only 4 of them and 10 counters in total. The probability to pick a non-white counter is now

$\displaystyle \frac{6}{10}$

Thus the option WN has the probability

$\displaystyle P(WN)=\frac{5}{11}\cdot \frac{6}{10}=\frac{30}{110}=\frac{3}{11}$

Now for the second option NW. The initial probability to pick a non-white counter is

$\displaystyle \frac{6}{11}$

The probability to pick a white counter is

$\displaystyle \frac{5}{10}$

Thus the option NW has the probability

$\displaystyle P(NW)=\frac{6}{11}\cdot \frac{5}{10}=\frac{30}{110}=\frac{3}{11}$

The total probability of event A is the sum of both

$\displaystyle P(A)=\frac{3}{11}+\frac{3}{11}=\frac{6}{11}$

$\boxed{\displaystyle P(A)=\frac{6}{11}}$

7 0

3 years ago

7b+12=5b what is the value for b?

likoan [24]

Answer:

B = -6

Step-by-step explanation:

7b + 12 = 5b

12 = -2b

-6 = b

Hope this helps. Pls give brainliest.

6 0

2 years ago

<img src="https://tex.z-dn.net/?f=18%20%7Bx%7D%5E%7B2%7D%20-%20x%20-%2039%20" id="TexFormula1" title="18 {x}^{2} - x - 39 " alt=

Anton [14]

I don’t know if you can solve it since it is an expression?

7 0

3 years ago

Read 2 more answers

Find the PERCENT of change.<br> 20 dogs to 5 dogs

aliya0001 [1]

Answer:

75%

Step-by-step explanation:

20-5=15 - change in numbers

15/20×100%= 75%

3 0

3 years ago

Please I need help <br><br><br> What is X

3241004551 [841]

180=(3x+25)+2x. Soooooo X=31

3 0

3 years ago