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inysia [295]
3 years ago
7

3. If 15 x+20' what is the value of? X

Mathematics
2 answers:
guapka [62]3 years ago
6 0
If 15=x+20 then x=-5
arsen [322]3 years ago
3 0
The awnser is x=-5 from the given
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1. Find <br> A) 35<br> B) 47.5<br> C) 67.5<br> D95
BARSIC [14]

Answer:

find which one my guy im trying to get infinite awnseres srryyyyy

Step-by-step explanation:

4 0
3 years ago
In Happyville, the ideal family has four children, at least two of which are girls. If you randomly select a Happyville family t
sleet_krkn [62]

Answer:

0.3125 = 31.25% probability that it is not ideal.

Step-by-step explanation:

For each children, there are only two possible outcomes. Either it is a girl, or they are not. The probability of a child being a girl is independent of any other child. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which 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)!}

And p is the probability of X happening.

0.5 probability of a children being a girl:

This means that p = 0.5

If you randomly select a Happyville family that has four children, what is the probability that it is not ideal?

Not ideal is less than two girls, so this is P(X < 2).

Four children means that n = 4. So

P(X < 2) = P(X = 0) + P(X = 1)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{4,0}.(0.5)^{0}.(0.5)^{4} = 0.0625

P(X = 1) = C_{4,1}.(0.5)^{1}.(0.5)^{3} = 0.25

P(X < 2) = P(X = 0) + P(X = 1) = 0.0625 + 0.25 = 0.3125

0.3125 = 31.25% probability that it is not ideal.

7 0
2 years ago
Review later
____ [38]
It would be 50 times because 15 divided by 3 is 5 and you just add your 0 back and get 50! hope this helps!
3 0
3 years ago
How many 2 1⁄4 meter lengths of tape can be cut from 36 meters of tape?
Fed [463]
Answer 16

36/2.25= 16 pieces of rope
6 0
3 years ago
Read 2 more answers
sumalee won 40 super bouncy balls playing horseshoes at her school's game night. later, she gave two to each of her friends. she
slavikrds [6]

sumalee has 16 friends because she gave away 32, if you divide 32 by 2 its 16 cuz thats how many she gave away to each person

6 0
3 years ago
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