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Len [333]
3 years ago
6

The population in the city is 4000 people. The population decreased by 42%. What is the new population?

Mathematics
2 answers:
soldi70 [24.7K]3 years ago
8 0
2,320 people is the new population amount.

Alexeev081 [22]3 years ago
8 0
42/100 x 4000 = 1680
4000 - 1680 = 2320
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Please Answer Snip-it Below Thanks
den301095 [7]

Answer:

the answer will be 7.5 feet

Step-by-step explanation:

3 0
3 years ago
Ruby has a bird feeder which is visited by an average of 13 birds every 2 hours during daylight hours. What is the probability t
zalisa [80]

Answer:

62.93%

Step-by-step explanation:

We have to solve it by a Poisson distribution, where:

p (x = n) = e ^ (- l) * l ^ (x) / x!

Where he would come being the number of birds that there would be in 40 minutes, we know that in 2 hours, that is 120 minutes there are 13, therefore in 40 there would be:

l = 13 * 40/120

l = 4,333

Now, we have p (x> 3) and that is equal to:

p (x> 3) = 1 - p (x <= 3)

So, we calculate the probability from 0 to 3:

 p (x = 0) = 2.72 ^ (- 4.33) * 4.33 ^ (0) / 0! = 0.01313

p (x = 1) = 2.72 ^ (- 4.33) * 4.33 ^ (1) / 1! = 0.0568

p (x = 2) = 2.72 ^ (- 4.33) * 4.33 ^ (2) / 2! = 0.12310

p (x = 3) = 2.72 ^ (- 4.33) * 4.33 ^ (3) / 3! = 0.17767

If we add each one:

0.01313 + 0.0568 + 0.12310 + 0.17767 = 0.3707

replacing:

p (x> 3) = 1 - 0.3707

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Which means that the probability is 62.93%

5 0
3 years ago
Plz help plz only I need the answer
TEA [102]

Answer:

The second one

Step-by-step explanation:

4 0
2 years ago
Find the sum of the given polynomials.
Xelga [282]
Sum = <span>ax + by + c + 2ax - 3by + c + by - c
Adding and cancelling the like terms
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</span><span>a. 3ax - by + c</span>
6 0
3 years ago
Read 2 more answers
Ivan has 6 times as many blue beads as red beads. he has 49 red and blue beads in all. how many blue beads does Ivan have
salantis [7]

Let

x--------> the number of blue beads

y--------> the number of red beads

we know that

x+y=49

x=49-y -------> equation 1

x=6y ------> equation 2

equate equation 1 and equation 2

49-y=6y\\ 6y+y=49\\ 7y=49\\\\ y=\frac{49}{7} \\  \\ y=7

find the value of x

x=6*7\\ x=42

therefore

the answer is

Ivan has 42 blue beads

3 0
3 years ago
Read 2 more answers
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