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tester [92]
3 years ago
13

Help me I’m not good at science

Mathematics
1 answer:
harkovskaia [24]3 years ago
4 0

Answer:

I believe this is correct, but I'm not a teacher or anything

Refraction

Refraction

Reflection

Refraction

Reflection

Reflection

Reflection

You might be interested in
3^2-2^3 what is that
quester [9]

Answer:

1

Step-by-step explanation:

3^2-2^3

3^2 = 9

2^3 = 8

9-8 = 1

5 0
3 years ago
Read 2 more answers
A real estate agent is showing homes to a prospective buyer. There are ten homes in the desired price range listed in the area.
Citrus2011 [14]

Answer:

0.48% probability that all four are new

Step-by-step explanation:

The homes are chosen "without replacement", which means that after a home is visited, it is not elegible to be visited again. So we use the hypergeometric distribution to solve this question.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

Total of 10 homes, so N = 10.

We want 4 new, so x = 4.

In total, there are 4 new, so k = 4.

Sample of four homes, so n = 4.

Then

P(X = 4) = h(4,10,4,4) = \frac{C_{4,4}*C_{6,0}}{C_{10,4}} = 0.0048

0.48% probability that all four are new

6 0
3 years ago
Help no links pls.
Sever21 [200]
I think true and ya
6 0
2 years ago
Read 2 more answers
Really need help on this
shepuryov [24]
I can’t see the problem
3 0
3 years ago
Read 2 more answers
Las propiedades de las multiplicaciones nos llevaran a igualar distint
Aleksandr-060686 [28]

Answer:

i think it would be c

Step-by-step explanation:

8 0
2 years ago
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