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
Kipish [7]
3 years ago
14

Let x1, x2, and x3 be 0 - 1 variables whose values indicate whether the projects are not done (0) or are done (1). Which answer

below indicates that at least two of the projects must be done?a.x1+ x2+ x3>2b.x1+ x2+ x3<2c.x1+ x2+ x3= 2d.x1- x2= 0
Mathematics
1 answer:
Sav [38]3 years ago
4 0

Answer:

Correct statement: a. x₁ + x₂ + x₃ > 2

Step-by-step explanation:

The variables <em>x</em>₁, <em>x</em>₂ and <em>x</em>₃ takes value 0 if the projects are not done and 1 if the projects are done.

Consider that at least two projects are done, i.e. 2 or more projects are done.

This can happen in:

x₁ = 0, x₂ = 1 and x₃ = 1

x₁ = 1, x₂ = 0 and x₃ = 1

x₁ = 1, x₂ = 1 and x₃ = 0

x₁ = 1, x₂ = 1 and x₃ = 1

The statement (x₁ + x₂ + x₃ > 2) will be true only when all the variables takes the value 1.

This statement implies that 2 projects are definitely done.

Thus, the correct statement is (a).

You might be interested in
If you bought a stock last year for a price of $67, and it has risen 12% since then, how much is the stock worth now, to the nea
lisabon 2012 [21]

Answer:$75.04

Step-by-step explanation:

last year price=$67

12% of 67

12/100 x 67

(12 x 67) ➗ 100

804 ➗ 100=8.04

Since it has risen by 12%

There new price is 67+8.04=75.04

4 0
3 years ago
Find a polynomial function of lowest degree with
ra1l [238]

Answer:

x^3-4x^2+25x-100

Step-by-step explanation:

We have 2 roots -5i and 4. Using the conjugate root theorem for the root -5i, we know that 5i should be another root

Combining the roots into a polynomial gives us:

(x+5i)(x-5i)(x-4)

Expand:

(x^2 + 25)(x-4)

x^3-4x^2+25x-100

8 0
2 years ago
Admission to the carnival is $10 plus $2 per ride. John spent $38 on admission and
Inessa [10]

Answer:

he went on 14 rides.

Step-by-step explanation:

take your total, 38, subtract that by 10 (because you have to pay the admission fee) and you have 28 dollars spent on rides. each ride costs 2 dollars so divide 28 by 2 and you get 14.

3 0
2 years ago
Read 2 more answers
The perimeter of a rectangular concrete patio is 38 meters. The area is 90 square meters. What are the dimensions of the patio?
Nookie1986 [14]
I hope this helps you

6 0
3 years ago
1. Refer to the equation 2x - 4y = 12
dem82 [27]

Answer: answer

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Whats the answer and proof of 12=4-1/4x
    12·1 answer
  • Under which condition does a country with a small GDP have a large per capita income?
    7·2 answers
  • What is an<br> equation of the line that passes through the points (-3,8) and (4,1)?
    7·1 answer
  • How do you find the surface area of a 3d object????
    15·2 answers
  • Arturo is customizing his next pair of basketball shoes. The following table shows the design components and how many options he
    15·1 answer
  • a rectangle has an area of 18cm2. the lengths of the sides are whole numbers. how long can the sides be? give all the examples y
    5·1 answer
  • Find the value of x in the triangle shown below.
    9·2 answers
  • The frigate bird has a top recorded speed of 153 kilometers per hour. How would you state this speed in the appropriate customar
    5·1 answer
  • Help!! what do i puttt WILL GIVE BRAINLIEST​
    6·2 answers
  • Help I need it quick
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!