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gizmo_the_mogwai [7]
1 year ago
14

Please help meFind the surface area and volume of this square pyramid.​

Mathematics
1 answer:
almond37 [142]1 year ago
5 0

Answer:

160

sorry if this is wrong

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Is i have 5 red marbles, 2 green and 3 blue, what is the probability of drawing two blue marbles in a row?
kherson [118]
So the chance of getting 1 blue marble is 30% or 3/10, the chance of getting another in a row is also 3/10 since its asking for both youd do 3/10*3/10 = 9/100
4 0
3 years ago
Question 4 options: Find the mean and standard deviation for a binomial distribution with 680 trials and a probability of succes
lys-0071 [83]

Answer:

Mean for a binomial distribution = 374

Standard deviation for a binomial distribution = 12.97

Step-by-step explanation:

We are given a binomial distribution with 680 trials and a probability of success of 0.55.

The above situation can be represented through Binomial distribution;

P(X=r) = \binom{n}{r}p^{r} (1-p)^{n-r} ; x = 0,1,2,3,.....

where, n = number of trials (samples) taken = 680 trials

            r = number of success  

           p = probability of success which in our question is 0.55

So, it means X <em>~ </em>Binom(n=680, p=0.55)

<em><u>Now, we have to find the mean and standard deviation of the given binomial distribution.</u></em>

  • Mean of Binomial Distribution is given by;

                    E(X) = n \times p

       So, E(X) = 680 \times 0.55 = 374

  • Standard deviation of Binomial Distribution is given by;

                   S.D.(X) = \sqrt{n \times p \times (1-p)}

                               = \sqrt{680 \times 0.55 \times (1-0.55)}

                               = \sqrt{680 \times 0.55 \times 0.45} = 12.97

Therefore, Mean and standard deviation for binomial distribution is 374 and 12.97 respectively.

3 0
3 years ago
You have 192 grams of a radioactive kind of iodine. How much will be left
m_a_m_a [10]

Answer:

192/2= 96 g after 7h

96/2=48 g after 14h

48/2= 24 g after 21h

<h2>24/2= 12 g after 28h </h2>
8 0
3 years ago
PLEASE HELP ITS URGENT I HAVE 3 MINS AND IM FAILING I REALLY NEED A A ASAP PLEASE HELP
mel-nik [20]

Answer:

Down

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
HELP ME ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.
Arte-miy333 [17]

Answer:

D

Step-by-step explanation:

This function resembles that of the absolute value function, never going into the negative y values. Hope this helps!

5 0
2 years ago
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