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
sp2606 [1]
3 years ago
12

A professor gives his students 9 essay questions to prepare for an exam. Only 3 of the questions will actually appear on the exa

m. How many different exams are possible?
Mathematics
1 answer:
Talja [164]3 years ago
4 0

Answer: 84

Step-by-step explanation:

The total number of the questions is 9

Possible question is 3

This is combination

Therefore n=9 and r=3

Combination formula=n! / ((n-r)! r!)

9C3=9! /((9-3)! 3!)

=362880 /(6! 3!)

=362880/4320

=84

You might be interested in
Figure B is a Scaled Copy of Figure A. What is the scale factor from Figure A to Figure B? *
AVprozaik [17]
So B is 6x bigger than figure A and A is only half the size of B
3 0
3 years ago
The point P(x, y) lies on the terminal side of an angle a = Ū in standard position. What are the signs of the values of x and y?
Akimi4 [234]
I think the answer is both x and y are positive
8 0
3 years ago
Help me please!! I need this for my math test!!
Svetlanka [38]

Answer:

y=+3

Step-by-step explanation:

6 0
3 years ago
The price of a technology stock has dropped to $9.79 yesterday. Today. the price fell to $9.68. Find the percentage decrease.
Citrus2011 [14]
The answer is 1.12% decrease
Explanation in image

4 0
3 years ago
In ΔVWX, the measure of ∠X=90°, XW = 65, WV = 97, and VX = 72. What is the value of the cosine of ∠V to the nearest hundredth?
bonufazy [111]

Answer:

The cosine of ∠V is of 0.74.

Step-by-step explanation:

Relations in a right triangle:

The cosine of an angle is given by the length of the adjacent side divided by the length of the hypotenuse.

XW = 65, WV = 97, and VX = 72.

\sqrt{65^2+72^2} = 97, and thus, this is a right triangle.

What is the value of the cosine of ∠V to the nearest hundredth?

The hypotenuse is the largest side, that is, WV = 97.

The adjacent side of angle V is VX = 72. So

\cos{B} = \frac{72}{97} = 0.74

The cosine of ∠V is of 0.74.

8 0
3 years ago
Other questions:
  • Rewrite the quadratic function in standard form and give the vertex f(x)=3x^2-6x-9
    8·1 answer
  • PLEASE HELP ME GREATLY APPRECIATED<br> A 42%<br> B 52%<br> C 58%<br> D 50%
    5·1 answer
  • A TV costs £800 plus a VAT if 20%<br> What us the total cost of the TV?
    5·2 answers
  • Geometric applications of exponents
    7·1 answer
  • Latoya is on her way home in her car. She has driven 30 miles so far, which is five-sixths of the way home. What is the total le
    11·2 answers
  • A gardener plants 250 sunflower seeds and 210 germinate. Find the probability that a sunflower seed will germinate.
    12·1 answer
  • What is the answer pls
    6·1 answer
  • Please help me!!! :D
    5·1 answer
  • Based on the diagram below, what is the interior measure of ∠Y ?
    11·1 answer
  • Find the slope of the line that passes
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!