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
Yuri [45]
3 years ago
13

Find the value of x cubed minus 2x squared minus 7x + 5 of x=1/2-√3 ​

Mathematics
1 answer:
Svetach [21]3 years ago
6 0

9514 1404 393

Answer:

  3

Step-by-step explanation:

For f(x) = x^3 -2x^2 -7x +5 and x=1/(2-√3), we have ...

  f(x) = ((x -2)x -7)x +5

and ...

  x = 1/(2-√3) = (2+√3)/(2^2 -3) = 2+√3

Then ...

  f(2+√3) = ((2 +√3 -2)(2 +√3) -7)(2 +√3) +5

  = (3+2√3 -7)(2+√3) +5

  = 2(√3 -2)(√3 +2) +5 = 2(3 -4) +5 = -2 +5

  f(1/(2 -√3)) = 3

_____

If you really mean x = (1/2) -√3, then f(x) = (42√3 -3)/8.

You might be interested in
Formula for the area of a triangular prisim
Artemon [7]
Idk cause i am stuck

5 0
3 years ago
Read 2 more answers
A travel agent is booking trips for tourists who travel from New York to Chicago. Tourists have three choices for how to travel
sashaice [31]

Answer:

P = 1/2

Step-by-step explanation:

If the tourist spends more than 275$, they must not arrive in Chicago by bus.

( 150 + 60 < 275, 150 + 40 < 275)

The total options the tourist can make:

3 x 2 = 6

(1st leg: 3 possible options, 2nd leg: 2 possible options)

The number of options the tourist can make after excluding bus option:

2 x 2 = 4

(1st leg: 2 remaining possible options, 2nd leg: 2 possible options)

The number of options the tourist can make after excluding the bus option and spend more than 275$:

4 - 1 = 3

(excluding the case of selecting train and cab, because 225 + 40 < 275)

=> The probability that the tourist will spend more than 275$ on these 2 legs of the trip:

P = 3/6 = 1/2

3 0
3 years ago
Please help need to be in on monday 22 may and im struggling
slavikrds [6]
1 = 84
2 = 40 
3 = 54 
4 = 18
5 = 35
6 = 21
7 = 33
 8 = 26 
9 = 30 
10 = 8
11 = 27 
12= 28 
13 = 21 
14 = 13 
15 = 10 

( Task 2 ) Hope this helps :) 

5 0
3 years ago
Read 2 more answers
How to know if one decimal is larger than another
nekit [7.7K]
Compare each place value. It's kind of hard to explain without examples...
8 0
4 years ago
Identify the transformed function that represents f(x) = ln x stretched vertically by a factor of 17, reflected across the x-axi
serg [7]

Answer:

b

Step-by-step explanation:

ANSWER. EXPLANATION. The given logarithmic function is. The transformation,. stretches the graph of y=f(x) vertically by a factor of c units ...

4 votes

ANSWERy = - 3 ln(x - 7)EXPLANATIONThe given logarithmic function is f(x) = ln(x)The transformation, y = - cf(x - k)stretches

6 0
3 years ago
Other questions:
  • Sam and John are finding −3 − 14. Who is correct?
    14·1 answer
  • The line through (1,6) and (0,3) passes through every quadrant expect one. Which one?​
    8·1 answer
  • Use the equation p=6k+12 to find the value of p when k=9.
    15·2 answers
  • A cone-shaped coffee filter of radius 6 cm and depth 10 cm contains water, which drips out through a hole at the bottom at a con
    8·1 answer
  • Need the answer ASAP
    11·1 answer
  • 6. Using the picture of the pre-image figure, computate the image coordinate values using the transformation given. dilation of
    10·1 answer
  • How would I create a graph for this equation? The equation is c=4.95+3.99b
    10·1 answer
  • What is the value of A when we rewrite<br> (2/3)^x+4 - (2/3)^x as A • (2/3)^x
    8·1 answer
  • The Appalachian Trail is about 2,175 miles long.
    11·1 answer
  • A student entering a doctoral program in educational psychology is required to select courses from the list of courses provided
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!