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
Umnica [9.8K]
3 years ago
11

. An instructor gives her class a set of 10 problems with the information that the final exam will consist of a random selection

of 5 of them. If a student has figured out how to do 7 of the problems, what is the probability that he or she will answer correctly?
Mathematics
1 answer:
aksik [14]3 years ago
4 0

Answer:

0.083

Step-by-step explanation:

Total number of questions 10

with the information that the final exam will consist of a random selection of 5 of them

number of questions the student had figured out= 7

P( All 5 correct)= (5 chosen among 7)/( 5 chosen among 10)

P( all 5 correct)= 7C5÷10C5

= 21÷252= 0.083

You might be interested in
A car of mass 1500 kg starting from rest can reach a speedof 20m/s within 10 sec. calculate the accelerating force of the car en
antoniya [11.8K]

Answer:

given mass =1500kg

intial velocity(u)=0 m/s

final velocity(v)=20m/s

time(s)=10 sec

accelerating force of the car engine=final velocity-intial velocity/time=20-0/10=20/10=2m/s^2

8 0
3 years ago
What value of x is in the solution set of 2x - 3&gt; 11 - 5x?<br> 0 -3<br> O 0<br> O2<br> o 4
ki77a [65]

Answer:

The answer is x>2, x has to be greater than 2,

the answer is 4 since it is greater than 2

4 0
3 years ago
Find the value of x <br><br> a. 7.5<br> b. 6<br> c. 10<br> d. 8
Radda [10]
B.6 because the length is equal to the length of the other 6
7 0
3 years ago
Need desperate help thanks
guapka [62]

Answer:

x = 158

y = 22

Step-by-step explanation:

A triangle's inside sides sum up to 180 degrees. So to find the angle y, just take 180 - the sum of the other two sides.

70 + 88 =  158

180 - 158 = 22

y = 22 degrees

Now, to find angle x, since x and y are next to each other on a straight line, it means they are supplementary angles. Supplementary angles add together to equal 180, so just substract y from 180 to get x.

180 - 22 = 158

x = 158 degrees

6 0
2 years ago
Choose the answer.
kiruha [24]
B) about 400 -not sure
7 0
3 years ago
Read 2 more answers
Other questions:
  • Point (−4, −5) is located in which quadrant?
    14·2 answers
  • Are the linear expression 10x+15 and 5(2x+3) equivalency?
    8·2 answers
  • How do I expand 4(-2y + 3), and whats the answer when expanded?
    10·2 answers
  • Evaluate the expression when a = 3, b = 2, and c= -3: (a³ + 2bc)/( c² -5)
    14·1 answer
  • Look at the figure, FHJM. find the length of HJ​
    5·1 answer
  • The sum of two numbers is 58. The difference between the same two numbers is 6. Find the two numbers, and then find the of the t
    11·1 answer
  • In ∆ KLM above, NO // ML and &lt; KNO = &lt; KON. Find m &lt; MNL =
    5·1 answer
  • In the terminal side of an angle in standard position lies on -4y=3x and x&gt;0, find the exact values of the trigonometric func
    12·1 answer
  • In how many different ways can change be given for a 50 cent coin using only 20 cent, 10 cent, and 5 cent coins? Justify your an
    9·2 answers
  • Jaz has the following scores from a new game:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!