1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vagabundo [1.1K]
3 years ago
15

can anyone help me with this ??

Mathematics
1 answer:
Mars2501 [29]3 years ago
4 0

Answer:

A. 336

B. Arranging 3 people in 8 chairs.

C. 42

B. Arranging 2 people in 7 chairs.

Step-by-step explanation:

A.

P(n, r) = P(8, 3)

Formula for Permutation is given as:

P(n, r) = \dfrac{n!}{(n-r)!}

Putting the value of n = 8 and r =3 , we get:

P(8, 3) = \dfrac{8!}{(8-3)!} \\\Rightarrow \dfrac{8\times 7 \times 6 \times 5\times 4 \times 3 \times 2\times 1}{5\times 4 \times 3\times 2\times 1}\\\Rightarrow 8\times 7 \times 6 \\\Rightarrow 336

B. Real world situation for part A:

Arranging 3 people on 8 chairs.

First person has 8 options.

Second person has 7 options.

Third person has 6 options.

C.

P(n, r) = P(7, 2)

Formula for Permutation is given as:

P(n, r) = \dfrac{n!}{(n-r)!}

Putting the value of n = 7 and r = 2 , we get:

P(7, 2) = \dfrac{7!}{(7-2)!} \\\Rightarrow \dfrac{7 \times 6 \times 5\times 4 \times 3 \times 2\times 1}{5\times 4 \times 3\times 2\times 1}\\\Rightarrow 7 \times 6 \\\Rightarrow 42

D.  Real world situation for part AC:

Arranging 2 people on 7 chairs.

First person has 7 options.

Second person has 6 options.

You might be interested in
a chocolate chip cookie has 10 more calories than an ice cream cone. together they have a total of 310 calories.
jasenka [17]

Answer:

The total would be 300

Step-by-step explanation:

310

-10

-----

300

5 0
3 years ago
What is the measure of ∠ABC
astraxan [27]

Answer:

B

Step-by-step explanation:

The measure of the chord- chord angle ABC is half the sum of the arcs intercepted by the angle and its vertical angle, that is

∠ ABC = 0.5( 82 + 44)° = 0.5 × 126° = 63° → B

4 0
3 years ago
The movie theater add 352 people in it.if the people split into eight even groups to watch different movies how many people Will
Dovator [93]
The answer is 44 because the equation is 352 divided 8. And 8 goes into 352 44 times. If you want to check the work you can also multiply 44 and 8, and it should be 352.

So the answer is 44
Hope this Helps:)
5 0
3 years ago
1- AT OAKNOLL SCHOOL, 90 OUT OF 270 STUDENTS OWN COMPUTERS. WHAT PERCENT OF STUDENTS OF OAKNOLL SCHOOL DO NOT OWN COMPUTERS? ROU
V125BC [204]
1. 270÷90=3=30% have and 70% don't have a computer.
8 0
3 years ago
Read 2 more answers
The sum of a number and 6% of itself is 42.4. find the number
kvasek [131]

Answer:

40

Step-by-step explanation:

6% of number = 6/100 × x = 6x/100 = 3x/50

Sum of the number and 6% of itself = 42.4

x + (3x/50) = 42.4

(50x+3x)/50 = 42.4

53x = 42.4 × 50

53x = 2120

x = 2120/53

x = 40


8 0
3 years ago
Read 2 more answers
Other questions:
  • Jordan was successful in 10 out of 15 foul shots. what is the percent of the shots that he was successful?
    13·2 answers
  • HELP PLEASEEE !!!!!!!!!!!!
    14·2 answers
  • Question is in the screenshot
    14·1 answer
  • Ohhhhh! I have a Brainliest
    9·1 answer
  • What is 5/8 - 4/7 but simplified? i dont know how to do it​
    8·1 answer
  • Two students in your class, Tucker and Karly, are disputing a function. Tucker says that for the function, between x = -3 and x
    13·1 answer
  • ASAP ANSWER PLEASE :)
    8·1 answer
  • I need a bit help with thisss^^
    5·2 answers
  • 1. Los hoteles están clasificados por estrellas de 1 a 5 de acuerdo con la ubicación, atención servicios y lujos que proporcione
    13·2 answers
  • Eduardo’s average speed on his commute to work was 55 miles per hour. On the way home, he hit traffic and only averaged 40 miles
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!