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3 years ago

Which model represents (-6)-(-3) on a number line

Mathematics

1 answer:

slega [8]3 years ago

6 0

Answer: Start at six and go right three times

Step-by-step explanation:

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The sum of three consecutive integers is −222−222. find the three integers.

nexus9112 [7]

The 3 numbers are 1 2 3

5 0

3 years ago

A tennis player makes a successful first serve 51% of the time. If she serves 9 times, what is the probability that she gets exa

aleksley [76]

Answer:

$P(X=3)$

And we can use the probability mas function and we got:

$P(X=3)=(9C3)(0.51)^3 (1-0.51)^{9-3}=0.1542$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=9, p=0.51)$

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:

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

And we want this probability:

$P(X=3)$

And we can use the probability mas function and we got:

$P(X=3)=(9C3)(0.51)^3 (1-0.51)^{9-3}=0.1542$

4 0

3 years ago

Read 2 more answers

Tommy can lay a brick walkway by himself in 12 hours. Robert does the same job in 10 hours.

Lapatulllka [165]

Answer:

5 5/11 hours

Step-by-step explanation:

So, there is a trick to doing this.

You would first need to get their work rate into the same measurements.

That's why we will find out how much they each work in one hour.

Tommy does 1/12 of the work in one hour while Robert does 1/10.

Here we can add them both up to make 11/60.

They finish 11/60 of the work in one hour.

They finish the job in 5 5/11 hours.

8 0

3 years ago

Ben is 5 years older than Wendy. Ben's age is 11 years less than three times Wendy's age. The system below models the relationsh

frosja888 [35]

I think that it is A I am not sure but i do think its either A or D

6 0

4 years ago

A circle has a radius that measures 10 centimeters. What is the area of the circle to the nearest tenth? Use 3.14 for pi.

tangare [24]

Radius(R)=10cm

We know,

Area of circle(A)=πr^2

=3.14×10^2

=3.14×100

=314cm^2

6 0

4 years ago