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3 years ago

8

PLS HELP ASAP!!!

1 answer:

OverLord2011 [107]3 years ago

5 0

Answer:

C I think I hope this helps

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A number is chosen at random from the first 100 positive integers. Find the probability that the number is not divisible by 10 o

KiRa [710]

So, possible numbers divisible by 10.
There are 10 of them in the first 100 positive integers.
10, 20, 30, 40, 50, 60, 70, 80, 90, and 100.
And then the ones divisible by 3. There are 33.
3, 6, 9, 12, 15, 18, 21.. you get my point.
However, three of those are shared, 30, 60, and 90.
So basically add the two together and subtract three for the shared ones.
10 + 33 - 3 = 40
So there are 40 possibilities, so there is a 4/10 chance that the number is divisible by 10 or 3, so a 6/10 chance that the number is not divisible.
Or 3/5.

7 0

3 years ago

If u can explain please :)

zhannawk [14.2K]

Answer:

it would be c because 12+8 = 20 and 24 is closer to 20

7 0

3 years ago

In a recent survey, 66% of the community favored building a health center in their neighborhood. Suppose 12 citizens are randoml

ipn [44]

Answer:

0.1197 = 11.97% probability that exactly 10 of the 12 individuals favor building the health center

Step-by-step explanation:

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.

66% of the community favored building a health center in their neighborhood.

This means that $p = 0.66$

12 citizens

This means that $n = 12$

What is the probability that exactly 10 of the 12 individuals favor building the health center?

This is P(X = 10).

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

$P(X = 10) = C_{12,10}.(0.66)^{10}.(0.34)^{2} = 0.1197$

0.1197 = 11.97% probability that exactly 10 of the 12 individuals favor building the health center

4 0

4 years ago

complete the square to rewrite y=x^2-6x+14 in vertex form. then state whether the vertex is a maximum or minimium and give its c

artcher [175]

The vertex form of the Quadratic equation is y = $(x-3)^{2}$ +5. The vertex is (3, 5), which is a maximum point.

<h3>what is a quadratic equation?</h3>

A quadratic equation is an algebraic equation with the power of its variable 2.

it can be written in standard form which is called vertex form or in the general form.

Analysis:

y = $x^{2}$ -6x +14

y = $x^{2}$ -6x +9 +5

Simplifying this perfect square expression y = $x^{2}$ -6x +9

y = $x^{2}$ -3x -3x +9

y = x(x-3) -3(x-3) + 5

y = (x-3)(x-3) +5

y = $(x-3)^{2}$ + 5

In conclusion, the Vertex form of the equation is y = $(x-3)^{2}$ + 5

Learn more about quadratic equation: brainly.com/question/1214333

#SPJ1

6 0

2 years ago

Is (x+4)^2 equivalent to 2x^2+8x+8? Explain or show your reasoning.

Zolol [24]

Answer:

It's wrong because the y intercepts are different

Step-by-step explanation:

The box method is OP for these kind of questions

If I don't do a good job explaining it then I reccomend you consult the internet

8 0

3 years ago