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2 years ago

0%2B%209%28%20%5Cfrac%7B%20%5Ccos%5E%7B2%7D%5Cinfty%20%7D%7B%20%7B%20%5Csin%7D%5E%7B2%7D%20%5Cinfty%20%7D%20%29%7D%7D" id="TexFormula1" title=" \large{\bold \red{ \sum \limits_{8}^{4} {x}^{2} + 9( \frac{ \cos^{2}\infty }{ { \sin}^{2} \infty } )}}" alt=" \large{\bold \red{ \sum \limits_{8}^{4} {x}^{2} + 9( \frac{ \cos^{2}\infty }{ { \sin}^{2} \infty } )}}" align="absmiddle" class="latex-formula">
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Mathematics

2 answers:

RSB [31]2 years ago

8 0

Answer:

i dont know what is this

Step-by-step explanation:

max2010maxim [7]2 years ago

6 0

Answer:

how did u do that the infinite thing

Step-by-step explanation:

h o w

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3 years ago

Jamal has $15.00 to spend at the concession

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I think it’s B. 7.50+1.50x<_15

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3 years ago

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A police department reports that the probabilities that 0, 1, 2, and 3 burglaries will be reported in a given day are 0.53, 0.40

SpyIntel [72]

The mean of the probability distribution is given by the expected value given by

$E(x)=\sum xp(x) \\ \\ =0(0.53)+1(0.40)+2(0.05)+3(0.02) \\ \\ =0.40+0.10+0.06=0.56$

The variance of the probability distribution is given by

$Var(x)=(x-\bar{x})^2p(x) \\ \\ =(0-0.56)^2(0.53)+(1-0.56)^2(0.40)+(2-0.56)^2(0.05)\\+(3-0.56)^2(0.02) \\ \\ =(-0.56)^2(0.53)+0.44^2(0.40)+1.44^2(0.05)+2.44^2(0.02) \\ \\ =0.3136(0.53)+0.1936(0.40)+2.0736(0.05)+5.9536(0.02) \\ \\ =0.166208+0.07744+0.10368+0.119072=0.4664$

The standard deviation is given by

$\sigma(x)=\sqrt{Var(x)} \\ \\ =\sqrt{0.4664}=0.683$

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3 years ago

Anna hiked 95⁄8 miles in 23⁄4 hours. How fast did she walk overall? A. 31⁄4 miles per hour B. 35⁄8 miles per hour C. 31⁄2 miles

Pani-rosa [81]

Answer:

C. 3 1/2 miles per hour

Step-by-step explanation:

I just converted the fractions to decimal form.

5/8 = 0.625 9 + 0.625 = 9.625

3/4 = 0.75 2 + 0.75 = 2.75

Now divide the 2 numbers:

9.625 / 2.75 = 3.5

Finally, convert the decimal back to a fraction:

3.5 = 3 1/2

Hope this helps!

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3 years ago

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