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
olya-2409 [2.1K]
3 years ago
9

Which statement about the following equation is true?2x2-9x+2-1​

Mathematics
1 answer:
Furkat [3]3 years ago
3 0

Complete Question:

Which statement about the following equation is true?

2x^2-9x+2 = -1

A) The discriminant is less than 0, so there are two real roots

B) The discriminant is less than 0, so there are two complex roots

C) The discriminant is greater than 0, so there are two real roots

D) The discriminant is greater than 0, so there are two complex roots

Answer:

C) The discriminant is greater than 0, so there are two real roots

Step-by-step explanation:

The given equation is 2x^2-9x+2 = -1 which by simplification becomes

2x^2 - 9x + 3 = 0

For a quadratic equation of the form ax^2 + bx + c = 0, the discriminant is given by the equation, D = b^2 - 4ac

If the discriminant D is greater than 0, the roots are real and different

If the discriminant D is equal to 0, the roots are real and equal

If the discriminant D is less than 0, the roots are imaginary

For the quadratic equation under consideration, a = 2, b = -9, c = 3

Let us calculate the discriminant D

D = (-9)² - 4(2)(3)

D = 81 - 24

D = 57

Since the Discriminant D is greater than 0, the roots are real and different.

You might be interested in
reduce the following fractions to their lowest terms: a. 6/8. b. 8/12c. 15/20 d. 9/18 e. 24/30 f. 25/40​
Murljashka [212]

Answer:

That's my slovings for your question

5 0
3 years ago
Caleb wants to kayak. Kayak rentals cost $14.50 for a half a hour. If Caleb rents a kayak for one hour and forty five minutes ho
svet-max [94.6K]

Answer:

$50.75

Step-by-step explanation:

There are 2 half hours in 1 hour. Since he needs the kayak for 3 half hours, you can multiply the $14.50 by 3. You still need to get the extra 15 minutes. Since a half hour is 30 minutes, and 30 divided by 2 is 15, you can divide 14.5 by 2 to get 7.25. 7.25+ (14.5×3)=15.75.

3 0
3 years ago
Read 2 more answers
Please help me my parents don’t understand either
lakkis [162]
For every loaf of bread there are 4 flour used
6 0
3 years ago
PLEASE I NEWD HELP ON THIS
Zarrin [17]

Answer:

5. Inequality form: n  ≥  3

   Interval notation: [3, ∞)

       

6.  Inequality form: x < 4

    Interval notation: (- ∞, 4)                          

11. Inequality form: x > 50

   Interval notation: (50, ∞)

12. Inequality form: y \geq 8

     Interval notation: [8, ∞)

15. Inequality form: z < 8

    Interval notation: (- ∞, 8)

       

16. Inequality form: y \geq 4

    Interval notation: [4, ∞)

Step-by-step explanation:

I tried to graph them as best as I could, I hope this helps!

7 0
3 years ago
Bob decides he wants to make guitars and sell them online. He makes and sells Gibson Explorer’s and Gibson Flying V’s. He can ma
lozanna [386]
Okay so the equation. Lets say e is explorers and v is flying vs and m = money.

e + v > or = 30.

80e + 5v =m.
 
e < or = 20\
v < or = 20.
Okay, the most money he could make would be if he made 20 explorers at 80 dollars and 10 vs at 5 dollars.
Total money...
1600 + 50 = 1650.
So he could make $1650.

7 0
3 years ago
Other questions:
  • The Great Pyramid of Giza is an example of a square pyramid and is the last surviving structure considered a wonder of the ancie
    14·1 answer
  • What are the properties are these??? A+1a
    7·1 answer
  • Which side lengths form a right triangle?
    8·1 answer
  • Factor 6a2 - 26a + 28.
    12·1 answer
  • Write an equation in slop _intercept form of the line that bisects the angle formed by BA and BC
    15·1 answer
  • 14) Find the slope of the line containing the points (5, 3) and (-7, 2).
    7·1 answer
  • One fourth times one fourth
    10·2 answers
  • What is the slope of the line?<br> Please explain
    14·2 answers
  • Mark owns a personal training business. He makes a total of $500 for every 3 clients he acquires.
    6·1 answer
  • Patel is solving 8x2 + 16x + 3 = 0. Which steps could he use to solve the quadratic equation? Select three options. 8(x2 + 2x +
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!