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
telo118 [61]
3 years ago
6

What is the discriminant of the polynomial below? 2x^2+3x-7

Mathematics
1 answer:
Katena32 [7]3 years ago
7 0

Answer:

Option C. 65

Step-by-step explanation:

we know that

The discriminant of a quadratic equation of the form ax^{2} +bx+c=0 is equal to

D=b^{2}-4ac

in this problem we have

2x^{2} +3x-7  

so

a=2\\b=3\\c=-7

substitute

D=3^{2}-4(2)*(-7)

D=9+56

D=65

You might be interested in
After spending $3,450 for tables and $3,950 for chairs, a convention center manager finds that the total is 4% more than he spen
g100num [7]
We are given with two current costs : $3,450 for tables and $3,950 for chairs .The total cost then is equal to $7,400. This is said to be 4% more than he spent  last year. so last year's expenses should be <span> $7,400 / 1.04 equal to $7115.39. The cost last year is expected to be less</span>
4 0
3 years ago
Read 2 more answers
Each child in the Martin family decided to save money for the family vacation.
irinina [24]

Answer:

The story is not clear enough to provide the answer

Step-by-step explanation:

First of all we do not know how many childen are in the Martin Family

20 \times 8

=$160

So depending on how each child sends and how many children will determine which kid will have most of the money left

5 0
2 years ago
Simplify -9+5(y+3)-2y
JulijaS [17]
3y+6 is the answer

-9+5(y+3)-2y
-9+5y+15-2y
-9+3y+15
=3y+6
8 0
3 years ago
A billiard ball is struck by a cue. It travels 100 cm before ricocheting off a rail and traveling another 100 cm into a corner p
Airida [17]

Answer:

76.53 cm

Step-by-step explanation:

From the question, the triangle formed has 2 sides and an included angle ;

Angle, θ = C = 45°

We use cosine rule :

Taking the side to find as c

a = 100 ; b = 100

From cosine rule :

c = sqrt(a² + b² - 2abCosC)

c = sqrt(100² + 100² - 2(100*100)Cos45

c = sqrt(10000 + 10000 - 20000 * 0.7071067)

c = sqrt(20000 - 14142.135)

c = sqrt(5857.865)

c = 76.536690

c = 76.53 cm

6 0
3 years ago
5. Find the constant of proportionality for the equation 5y = 75x.
gizmo_the_mogwai [7]
C. K= 70 would be right
7 0
3 years ago
Other questions:
  • How the value of a decimal changes as you move to the left or the right in a place-value chart
    15·2 answers
  • What is the value of x in the equation 4x + 8y=40 when y=0.8
    7·2 answers
  • What is the number under the car?
    12·1 answer
  • A football team is at its own 25-yard line. In the next three plays, it loses an average of 4 yards per play. Where is the team
    13·2 answers
  • 458 students went on a school field trip. Ten buses were filled, and 8 students traveled in cars. How many students were on each
    12·2 answers
  • How do you write this in standard form? (6-7i)/(1-2i)
    6·1 answer
  • Evaluate the equation please
    5·1 answer
  • The game that you want to buy costs $34.95. It is on<br> sale for 20% off. What is the sale price?
    13·1 answer
  • Find the slips of the following line: <br> 3x+5y=-20
    12·1 answer
  • The following data points represent the weight (in kilograms) of 5 randomly selected dogs at the pound.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!