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
Akimi4 [234]
3 years ago
11

What row of Pascal's triangle should be used when looking for the number of ways 15 students can be selected from a class of 32

students?
A) 14
B) 15
C) 31
D) 32
Mathematics
2 answers:
skad [1K]3 years ago
8 0

the number of ways 15 students can be selected from a class of 32 students

Here the number of students to be selected = 15

And the total number of students = 32

So the Number of ways 15 students can be selected from a class of 32 students should be

32 C 15 ,

it means we have to solve 32 C 15 ,

for this we need to see the 15th row of the pascals triangle.

irakobra [83]3 years ago
8 0
Im gonna say the answer is b
You might be interested in
Algerabuc equation<br> 3x + 5 = 14
dexar [7]

Answer: x=3

Step-by-step explanation:

3x + 5 = 14

Subtract 5 from both sides

3x=9

Divide both sides by 3 to get x alone

x=3

6 0
3 years ago
Read 2 more answers
What is the remainder of (4x2 + 7x-1)= (4 + x)?<br>A. -9x – 1<br>B.23x – 1<br>C.35<br>D.-37​
bearhunter [10]

Answer: I don't know what you meant by remainder but i hope this helps :)

x=\frac{-3+\sqrt{29}}{4},\:x=-\frac{3+\sqrt{29}}{4}\\

Step-by-step explanation:

\left(4x^2+7x-1\right)=\left(4+x\right)\\\mathrm{Refine}\\4x^2+7x-1=4+x\\\mathrm{Subtract\:}x\mathrm{\:from\:both\:sides}\\4x^2+7x-1-x=4+x-x\\Simplify\\4x^2+6x-1=4\\\mathrm{Subtract\:}4\mathrm{\:from\:both\:sides}\\4x^2+6x-1-4=4-4\\\mathrm{Simplify}\\4x^2+6x-5=0\\\mathrm{For\:}\quad a=4,\:b=6,\:c=-5:\\\quad x_{1,\:2}=\frac{-6\pm \sqrt{6^2-4\times \:4\left(-5\right)}}{2\times \:4}

\frac{-6+\sqrt{6^2-4\times \:4\left(-5\right)}}{2\times \:4}\\=\frac{-6+\sqrt{6^2+4\times \:4\times \:5}}{2\times \:4}\\=\frac{-6+\sqrt{116}}{2\times \:4}\\=\frac{-6+\sqrt{116}}{8}\\\\Let\: simplify\: ; -6+2\sqrt{29}\\=-2\times \:3+2\sqrt{29}\\=2\left(-3+\sqrt{29}\right)\\=\frac{2\left(-3+\sqrt{29}\right)}{8}\\=\frac{-3+\sqrt{29}}{4}\\

\frac{-6-\sqrt{6^2-4\times \:4\left(-5\right)}}{2\times \:4}\\\\=\frac{-6-\sqrt{6^2+4\times \:4\times \:5}}{2\times \:4}\\\\=\frac{-6-\sqrt{116}}{2\times \:4}\\\\=\frac{-6-2\sqrt{29}}{8}\\\\=-\frac{2\left(3+\sqrt{29}\right)}{8}\\\\=-\frac{3+\sqrt{29}}{4}\\\\\\x=\frac{-3+\sqrt{29}}{4},\:x=-\frac{3+\sqrt{29}}{4}

6 0
2 years ago
Read 2 more answers
PLEASE HELP BEEN HERE for 30 minutes. GET A EASY 10 points!
steposvetlana [31]

The answer is -- A. Exactly one solution

6 0
3 years ago
Fill in the correct justification for each step in solving the equation below 3(12-9x)=-16x+58
BaLLatris [955]

<u>answer:</u>

given

distributive property

subtraction property of equality

addition property of equality

division property of equality

hope this helps! :)❤ from peachimin



4 0
3 years ago
Which integers are greater than -3 and less than 0?
Anon25 [30]
Integers are whole numbers, both positive and negative. Therefore, all of the positive and negative whole numbers between these two numbers in a set will be your answer:

{-2, -1}

Hope this helped, and have a nice day!
3 0
3 years ago
Read 2 more answers
Other questions:
  • Find the value of y for the given value of x
    12·2 answers
  • A friend has placed a large number of plastic disks in a hat and invited you to select one at random. He informs you that they h
    5·1 answer
  • Its late anyone wanna talk?
    14·2 answers
  • Find the slope of the following graphs
    13·1 answer
  • If using the method of completing the square to solve the quadratic
    6·1 answer
  • I really need help!!! <br> if f(x)=x^2+4x-5, find f(-4)
    13·1 answer
  • 8. 6r + 5 = 4 6 - 7y -20 ​
    9·1 answer
  • What is the volume of the prism?
    9·1 answer
  • Which expression is a factor of both x2-3x+2 and
    10·1 answer
  • Please help! I'm so stuck!<br> Asap!!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!