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astra-53 [7]
3 years ago
13

Which group of solid figures have curved surfaces​

Mathematics
1 answer:
Burka [1]3 years ago
4 0

Answer:

manyuhsjshd djdjjdbejsjjdue

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Sylvia earns $7 per hour at her after school job. After working one week she recieved a paycheck for $91. Write and solve an equ
Mashutka [201]
Amount of hours worked = h
7h = 91
h = 13 hours worked that week 
h (is greater to or equal to) 15
7 x 15 would equal 105 which means the most she can make in a week is $105

3 0
3 years ago
Solve the right triangle. Round decimal answers to the nearest tenth. E D 8 14 1 F DE ~ ,mZE ~ MZD​
Ugo [173]

Answer:

DE≈16.1

m<E≈60.3

m<D≈29.7

Step-by-step explanation:

6 0
2 years ago
For each given p, let ???? have a binomial distribution with parameters p and ????. Suppose that ???? is itself binomially distr
pshichka [43]

Answer:

See the proof below.

Step-by-step explanation:

Assuming this complete question: "For each given p, let Z have a binomial distribution with parameters p and N. Suppose that N is itself binomially distributed with parameters q and M. Formulate Z as a random sum and show that Z has a binomial distribution with parameters pq and M."

Solution to the problem

For this case we can assume that we have N independent variables X_i with the following distribution:

X_i Bin (1,p) = Be(p) bernoulli on this case with probability of success p, and all the N variables are independent distributed. We can define the random variable Z like this:

Z = \sum_{i=1}^N X_i

From the info given we know that N \sim Bin (M,q)

We need to proof that Z \sim Bin (M, pq) by the definition of binomial random variable then we need to show that:

E(Z) = Mpq

Var (Z) = Mpq(1-pq)

The deduction is based on the definition of independent random variables, we can do this:

E(Z) = E(N) E(X) = Mq (p)= Mpq

And for the variance of Z we can do this:

Var(Z)_ = E(N) Var(X) + Var (N) [E(X)]^2

Var(Z) =Mpq [p(1-p)] + Mq(1-q) p^2

And if we take common factor Mpq we got:

Var(Z) =Mpq [(1-p) + (1-q)p]= Mpq[1-p +p-pq]= Mpq[1-pq]

And as we can see then we can conclude that   Z \sim Bin (M, pq)

8 0
3 years ago
Find the mode for a data set. 18,24,24,24,25,37,37,46
Sphinxa [80]

Answer:

24 is the mode

Step-by-step explanation:

Mode is the number that is most often seen.

18 is seen 1 time

24 is seen 3 times

25 is seen 1 time

37 is seen 2 times

46 is seen 1 time

24 is the mode because it is seen the most often.

4 0
2 years ago
Read 2 more answers
Write an equation and solve.
mezya [45]
Equation: 50+15x=200
solution: x= 10

it would take him 10 weeks to purchase the bike he wants.
8 0
2 years ago
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