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3 years ago

The population of a village is in the following ratios.

Mathematics

1 answer:

statuscvo [17]3 years ago

4 0

Answer:

13:7

Step-by-step explanation:

We see that the ratio from women:children is 13:4.

Therefore, the number of women is 13.

In the ratio comparing men to children we see that it is 7:3.

Therefore, the number of men is 7.

Now we need to compare the number of women to the number of men which is 13:7.

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99x99 equals what no calcutalors pls

Wittaler [7]

Answer:

9801

Step-by-step explanation:

you can solve by putting 99 over 99 and then multiplying

8 0

3 years ago

At a wildlife preserve,

kakasveta [241]

Answer:

you have to add the numbers . when ever there is a total that means to add

Step-by-step explanation:

13+14=27

4 0

3 years ago

Read 2 more answers

I need help on these three questions I’m so confused on how to answer them

GalinKa [24]

Answer:

1. S(1) = 1; S(n) = S(n-1) +n^2

2. see attached

3. neither

Step-by-step explanation:

1. The first step shows 1 square, so the first part of the recursive definition is ...

S(1) = 1

Each successive step has n^2 squares added to the number in the previous step. So, that part of the recursive definition is ...

S(n) = S(n-1) +n^2

2. See the attachment for a graph.

3. The recursive relation for an arithmetic function is of the form ...

S(n) = S(n-1) +k . . . . . for k = some constant

The recursive relation for a geometric function is of the form ...

S(n) = k·S(n-1) . . . . . . for k = some constant

The above recursive relation is not in either of these forms, so it is neither geometric nor arithmetic.

8 0

3 years ago

What is the height of a cone with radius 5 and volume=100 π?

timurjin [86]

The height of the cone would be 10 being that fact that if multiplied by 2 you get 20x 5 equals 100

3 0

3 years ago

Read 2 more answers

It is known that 25% of inhabitants of a community favour a political party A.

Keith_Richards [23]

Answer:

i) $P(X=2)=(20C2)(0.25)^2 (1-0.25)^{20-2}=0.0669$

ii) $P(X=0)=(20C0)(0.25)^0 (1-0.25)^{20-0}=0.00317$

$P(X=1)=(20C1)(0.25)^1 (1-0.25)^{20-1}=0.0211$

$P(X=2)=(20C2)(0.25)^2 (1-0.25)^{20-2}=0.0669$

And replacing we got:

$P(X \geq 3) = 1- [0.00317+0.0211+0.0669]= 0.90883$

iii) $P(X$

Step-by-step explanation:

Let X the random variable of interest "number of inhabitants of a community favour a political party', on this case we now that:

$X \sim Binom(n=20, p=0.25)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

Part i

We want this probability:

$P(X=2)=(20C2)(0.25)^2 (1-0.25)^{20-2}=0.0669$

Part ii

We want this probability:

$P(X\geq 3)$

And we can use the complement rule and we have:

$P(X\geq 3) = 1-P(X$

And if we find the individual probabilites we got:

$P(X=0)=(20C0)(0.25)^0 (1-0.25)^{20-0}=0.00317$

$P(X=1)=(20C1)(0.25)^1 (1-0.25)^{20-1}=0.0211$

$P(X=2)=(20C2)(0.25)^2 (1-0.25)^{20-2}=0.0669$

And replacing we got:

$P(X \geq 3) = 1- [0.00317+0.0211+0.0669]= 0.90883$

Part iii

We want this probability:

$P(X$

And replacing we got:

$P(X$

6 0

3 years ago