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kondor19780726 [428]
3 years ago
6

Algebra problem below.

Mathematics
1 answer:
umka21 [38]3 years ago
3 0
A= \frac{1}{2}bh= \frac{1}{2}*18*11=9*11=99 \ ft^2
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Abe ate 1/6 of a small pizza. Aisha ate 1/8 of a small pizza. Who ate more?
Papessa [141]

abe

Step-by-step explanation:

aisha ate more because aisha slice was cut into more pieces. then leaving her with the smallest peice and abe had less slices then leaving him with bigger slices so in conclusion abe ate more

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3 years ago
According to a study conducted by the Toronto-based social media analytics firm Sysomos, of all tweets get no reaction. That is,
amm1812

Complete Question

According to a study conducted by the Toronto-based social media analytics firm Sysomos, 75% of all tweets get no reaction. That is, these are tweets that are not replied to or retweeted (Sysomos website, January ). Suppose we randomly select tweets.

a. What is the expected number of these tweets with no reaction (to the nearest whole number)?

b. What are the variance (to 2 decimals) and standard deviation (to 4 decimals) for the number of these tweets with no reaction? Variance Standard deviation

Answer:

a

The mean is  \mu = 150

The variance \sigma^2 =37.5

The standard deviation is \sigma \approx 6.1237

Step-by-step explanation:

A binomial distribution is mathematically represented as B(n,p)

where n denotes the number of independent trials  =200

    And p denote the probability of success  = 0.75

     We also have the probability of failure which is denoted as q and is equivalent to 1-p

if p and q are constant then

In binomial distribution the probability of x success and (n-x) is mathematically represented as

           P[X =x] =[\left n} \atop x}} \right. ] p^x (1-p)^{n-x}

Where x= 0,1,2,...,n for 0\le p \le 1

Now [\left n} \atop x}} \right. ]  = \frac{n!}{x(n-x)!}

Now the mean(Expected number ) of these probability in binomial distribution is mathematically represented as

                  \mu = np

                     = 200 *0.75 = 150

And the variance is mathematically represented as

                 \sigma^2 = np(1-p)

                    = 200 * 0.75 (1-0.75) = 37.5

And the standard deviation is mathematically represented as

                     \sigma = \sqrt{np(1-p)}

                       = \sqrt{200 *0.75(1-0.75)} =\sqrt{37.5} \approx 6.1237

We can obtain the standard z -score of a d

6 0
3 years ago
What is 30-20-65+10+4=
ryzh [129]

Answer:

-41

Step-by-step explanation:

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2 years ago
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HELP PLEASE !! .................................................................................................................
myrzilka [38]

Answer:

15

Step-by-step explanation:

Substitute a and b then

Follow PEMDAS

Hope this helps! :)

5 0
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What is:<br> m% of n?<br><br> PLEASE HELP ME
bija089 [108]

Answer:

<h3>m% of n</h3><h3>m/100 . n</h3>

<h3>mn/100</h3>

Step-by-step explanation:

<h3>I hope it helps ❤❤</h3>
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