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Dovator [93]
3 years ago
11

What is the difference between many to many and one to one relationships in math?

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
6 0

Answer:A function is said to be one-to-one if every y value has exactly one x value mapped onto it, and many-to-one if there are y values that have more than one x value mapped onto them.

Step-by-step explanation:

MatroZZZ [7]3 years ago
5 0

Answer:

yeah what the other kid said lol

Step-by-step explanation:

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In a large population, 82% of the households have cable tv. A simple random sample of 225 households is to be contacted and the
anzhelika [568]

Answer:

The mean of the sampling distribution of the sample proportions is 0.82 and the standard deviation is 0.0256.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For proportions, the mean is \mu = p and the standard deviation is s = \sqrt{\frac{p(1-p)}{n}}

In this problem, we have that:

p = 0.82, n = 225.

So

\mu = 0.82

s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.82*0.18}{225}} = 0.0256

The mean of the sampling distribution of the sample proportions is 0.82 and the standard deviation is 0.0256.

7 0
3 years ago
Read 2 more answers
Solve the following:<br>a) 2(5x – 3) = 24<br>b) 5(2x + 1) = 50​
likoan [24]

Answer:

x = 3 and x = \frac{9}{2}

Step-by-step explanation:

(a)

2(5x - 3) = 24 ( divide both sides by 2 )

5x - 3 = 12 ( add 3 to both sides )

5x = 15 ( divide both sides by 5 )

x = 3

(b)

5(2x + 1) = 50 ( divide both sides by 5 )

2x + 1 = 10 ( subtract 1 from both sides )

2x = 9 ( divide both sides by 2 )

x = \frac{9}{2}

3 0
3 years ago
All of the following are equivalent, except _____.
lianna [129]
Factor x as it is a common factor;
x(8+3)
=11x
4 0
3 years ago
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What is the standard form of the quadratic function that has a vertex at (3,-2) and goes through the point (4,0)?
nydimaria [60]

Answer:

2x^2 - 12x + 16

Step-by-step explanation:

5 0
4 years ago
11 fewer than a number b
Verdich [7]

Answer:

b-11

Step-by-step explanation:

is that what the question is asking for?

6 0
4 years ago
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