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yawa3891 [41]
3 years ago
13

Please help with Q. b) ii)

Mathematics
1 answer:
ANEK [815]3 years ago
5 0
So for a mother ages 28 , there is a chance of 1 in 1000 , but at the age of 38 there is a chance of 1 in 200 . to work out how many times more likely it is for the 38 year old to give birth to a child with down syndrome is to divide 1000 by 200 and this gives us 5 . so the 38 year old is 5 times more likely to give birth to a child with down syndrome than a 28 year old :)
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At a frisbee throwing competition one contestant threw a frisbee 113.47 meters
jekas [21]
I don’t understand the question
5 0
3 years ago
The probability that an archer hits a target on a given shot is .7 if five shots are fired find the probability that the archer
VikaD [51]
This is a problem in "binomial probability."  Either the archer hits his target or he does not.  This experiment is performed 5 times (so that n=5), and the probability that the archer will hit the target is 0.7 (so that p=0.7).

We need to find the binomial probability that x=3 when the possible outcomes are {0, 1, 2, 3, 4, 5}.

You could use a table of binomial probabilities to evaluate the following:

P(5, 0.7, 3).

Alternatively, you could use a TI-83 or TI-84 calculator and its built-in "binompdf(  " function.

I evaluated binompdf(5,0.7,3) and obtained the result 0.309.


5 0
3 years ago
What is the length of ST? Please explain your answer
Aliun [14]
We know that

If a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment. (Intersecting Secant-Tangent Theorem)

so

ST²=RT*QT

RT=7 in

QT=23+7-----> 30 in

ST²=7*30-----> 210

ST=√210-----> 14.49 in


the answer is

RT=14.49 in

4 0
3 years ago
PLEASE HELP ME ........
vodka [1.7K]

Answer:

I can´t see...

Step-by-step explanation:

4 0
3 years ago
Please help me find what to plot for this (no decimals )
Aleonysh [2.5K]

Answer:

(0, 6), (4, 5)

Step-by-step explanation:

graph (0, 6) first, then from those points go down -1 and over 4 to get (4, 5)

4 0
3 years ago
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