Mathematics, 14.08.2020 08:01 hardwick744

Evaluate plz plz plz help me i am soo confused

Answers: 2

Show answers

Answers

Answer from: juniorgutierrez997

Hey there! I'm happy to help!

QUESTION 100

Here, we are looking for the number of permutations. A permutation is the number of possible arrangements you can make from a given set of things (order matters). If you have 6 kids standing in alphabetical order in line, that is one permutation. If you do reverse alphabetical order, that is a different permutation.

We are asked to find the number of permutations using the given format:

$_{n}P_{r}\\$

This is simply a representation of what we want to find. The P means we are looking for the number of permutations. The n is the total number of objects in the set (for example, if there were 26 kids we could choose from to make this 6 person line, n would be 26). The r is the number of things chosen from the set (in our line example, the r would be six because we are choosing 6 kids).

The formula for finding the number of permutations is $\frac{n!}{(n-r)!}$ . The ! is factorial, it means you multiply that number by every integer counting backwards towards 1. 6! is 6×5×4×3×2×1. There is an option to do this on your calculator, though.

Let's solve this problem.

$_{5}P_{4}=\frac{5!}{(5-4)!}= \frac{120}{1} =120$

This means that there are 120 permutations.

QUESTION 101

Now we have a C. This is similar to permutations but with combinations order does not matter. With our line example, having the same six kids in alphabetical order is a different permutation than having it in backwards alphabetical order. With combinations, if you have those specific six kids, it is just one combination; the order does not matter.

The formula for combinations is $\frac {n!}{r!(n-r)!}$ . Let's plug in our numbers and solve for this.

$_{8}C_{2}=\frac{8!}{2!(8-2)!} =\frac{8!}{2!(6!)}=\frac{40320}{1440} =28$

QUESTION 102

Quick note: 0! is equal to 1. I don't really know why but there's probably proof somewhere.

$_{7}C_{0}=\frac{7!}{0!(7-0)!} =\frac{7!}{7!} =1$

And I believe you already have Question 103 figured out.

4!=4×3×2×1=24

Have a wonderful day! :D

Answer from: Quest

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.

Answer from: Quest

answer: the four apples you took away.

step-by-step explanation:

Another question on Mathematics

Mathematics, 21.06.2019 18:00

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Answers: 2

Answer

Mathematics, 21.06.2019 20:00

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

Answers: 1

Answer

Mathematics, 21.06.2019 20:30

What is the volume of the cone to the nearest cubic millimeter? (use π = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?

Answers: 1

Answer

Mathematics, 21.06.2019 23:00

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°

Answers: 1

Answer

You know the right answer?

Evaluate plz plz plz help me i am soo confused
...

Questions