answer.
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]
2 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]2 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
Graph the image of the given triangle under a dilation with a scale factor of 12 and center of dilation ​ (0, 0)
AysviL [449]

Answer:Graph the image of the given triangle under a dilation with a scale factor of 12 and center of dilation ​ (0, 0)

4 0
2 years ago
What is happening to the graph when the x-values are between 4 and 8
VashaNatasha [74]
The numbers are going down
5 0
2 years ago
Read 2 more answers
Hope researches the impact of one variable on another. She graphs the data from her research and sees that the data forms a shap
BigorU [14]

The <em><u>correct answer</u></em> is:

She can determine that while there is an association between the variables, there is no correlation, and she cannot determine causation.

Explanation:

Since there is an arch shape to her graph, we know that as one variable changes, the other changes in the same manner. This means there is an association between the variables.

However, since the graph is not linear, there is no correlation between the variables. Since there is no correlation, we cannot determine causation.

6 0
2 years ago
Read 2 more answers
Trevor is analyzing a circle, y2 + x2 = 100, and a linear function g(x). Will they intersect?
lakkis [162]
Given a circle described by the equation:
y^2+x^2=100
and a function g(x) given by the table
\begin{center}&#10;\begin{tabular}{ |c |c |c }&#10; x & g(x) \\&#10; -1 & -22 \\&#10; 0 & -20  \\&#10;1 & -18   &#10;\end{tabular}&#10;\end{center}

The function g(x) describes a straight line with the equation:
\frac{y-y_1}{x-x_1} = \frac{y_2-y_1}{x_2-x_1}  \\  \\  \frac{y-(-22)}{x-(-1)} = \frac{-20-(-22)}{0-(-1)}  \\  \\ \frac{y+22}{x+1} = \frac{-20+22}{0+1} = \frac{2}{1}  \\  \\ y+22=2(x+1)=2x+2 \\  \\ y=2x-20

To check if the circle and the line intersects, we substitute the equation of the line into the equation of the circle to see if we have a real solution.
i.e.
y^2+x^2=100 \\  \\ (2x-20)^2+x^2=100 \\  \\ 4x^2-80x+400+x^2=100 \\  \\ 5x^2-80x+300=0 \\  \\ x^2-16x+60=0 \\  \\ (x-6)(x-10)=0 \\  \\ x-6=0 \ or \ x-10=0 \\  \\ x=6 \ or \ x=10

When x = 6, y = 2(6) - 20 = 12 - 20 = -8 and when x = 10, y = 2(10) - 20 = 20 - 20 = 0

Therefore, the circle and the line intersect at the points (6, -8) and (10, 0).
8 0
2 years ago
Read 2 more answers
A psychology student wishes to investigate differences in political opinions between business majors and political science major
Veseljchak [2.6K]
The answer is C.................................................
7 0
2 years ago
Read 2 more answers
Other questions:
  • Daniel, my son, is exactly one fifth of my age. in 21 years time, i will be exactly twice his age. my wife is exactly seven time
    13·1 answer
  • Stephanie has a homeowners insurance policy for her $355,000 home with an annual premium of $0.42 per $100 of value and a deduct
    9·2 answers
  • A worker has four different job offers, each with a contract for seven years. Assuming the job descriptions are identical, which
    15·2 answers
  • A car can travel 400 miles on a full tank of petrol. A more efficient car can travel 32% further. How many miles can it travel o
    13·1 answer
  • The failure rate for a guided missile control system is 1 in 1,000. Suppose that a duplicate but completely independent control
    10·1 answer
  • Tarush is a landscape architect. For his first public project he is asked to create a small scale drawing of a garden to be plac
    6·2 answers
  • Which calculation results in the best estimate of 148% of 203? (200) (140 percent) = (200) (100 percent + 40 percent) = (200) (1
    15·2 answers
  • Which table represents a linear function that has a slope of 5 and a y-intercept of 20? A 2-column table with 4 rows. Column 1 i
    10·2 answers
  • Which expressions are equivalent to 4^{-2} \cdot 7^{-2}4 −2 ⋅7 −2 4, start superscript, minus, 2, end superscript, dot, 7, start
    13·1 answer
  • A 30-foot-long support wire for a 16-foot high streetlight runs from the top corner of a building to a point on the ground, form
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!