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myrzilka [38]
4 years ago
12

If y=x^2+2x+3 find the falue of Y when x=3

Mathematics
2 answers:
yarga [219]4 years ago
5 0
Y=18 is the correct answer
dmitriy555 [2]4 years ago
4 0
If y=x^2+2x+3 when x=3 then y=........

Plug in 3 where x is stated.
Work:

y=(3)^2+2(3)+3
y=9+2(3)+3
y=9+6+3
y=18

Answer: 18
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Suppose the number of insect fragments in a chocolate bar follows a Poisson process with the expected number of fragments in a 2
leonid [27]

Answer:

a)The expected number of insect fragments in 1/4 of a 200-gram chocolate bar is 2.55

b)0.6004

c)19.607

Step-by-step explanation:

Let X denotes the number of fragments in 200 gm chocolate bar with expected number of fragments 10.2

X ~ Poisson(A) where \lambda = \frac{10.2}{200} = 0.051

a)We are supposed to find the expected number of insect fragments in 1/4 of a 200-gram chocolate bar

\frac{1}{4} \times 200 = 50

50 grams of bar contains expected fragments = \lambda x = 0.051 \times 50=2.55

So, the expected number of insect fragments in 1/4 of a 200-gram chocolate bar is 2.55

b) Now we are supposed to find the probability that you have to eat more than 10 grams of chocolate bar before ending your first fragment

Let X denotes the number of grams to be eaten before another fragment is detected.

P(X>10)= e^{-\lambda \times x}= e^{-0.051 \times 10}= e^{-0.51}=0.6004

c)The expected number of grams to be eaten before encountering the first fragments :

E(X)=\frac{1}{\lambda}=\frac{1}{0.051}=19.607 grams

7 0
3 years ago
A circle has a radius of 8 cm. What is its area?<br><br> Use <img src="https://tex.z-dn.net/?f=%20%5Cpi%20" id="TexFormula1" tit
jekas [21]
The formula for the area of the circle is:
Area=  \pi r^{2}
All you have to do is plug in 8 for r :)
7 0
3 years ago
Please help me please!!!
GenaCL600 [577]

Answer:

a is the answer

Step-by-step explanation:

because i said so

5 0
3 years ago
Read 2 more answers
Consider the following types of data that were obtained from a random sample of 49 credit card accounts. Identify all the averag
Mashcka [7]

Answer:

All options( option A, option B and option C)

Step-by-step explanation:

Mean, median and mode are used to summarize the data. Mode can be calculated for both quantitative and qualitative data but mean and median cannot be calculated for qualitative data.

Here outstanding balance on each account represents quantitative data and mode, median and mean all can summarize the quantitative data. So, mean, median and mode each can be used to summarize the data of outstanding balance on each account.

8 0
3 years ago
For several weeks, the function f(x) = 3(4)^x represented the number of birds
olasank [31]

Answer:

  exponential growth with a growth factor of 4

Step-by-step explanation:

Each week the number was multiplied by a factor of 4 times the number of the previous week.

4 0
3 years ago
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