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
Novay_Z [31]
3 years ago
7

What is the discriminant of the polynomial below?

Mathematics
2 answers:
oksian1 [2.3K]3 years ago
8 0

Let d = discriminant

d = b^2 - 4ac

Let a = 2, b = 4 and c = -9

We now plug and chug.

d = (4)^2 - 4(2)(-9)

d = 16 - 8(-9)

d = 16 + 72

d = 88

bija089 [108]3 years ago
8 0

Answer:

А. 88

Step-by-step explanation:

2х^2 + 4x - 9

This is in the form

ax^2 +bx +c

where a=2 b=4 and c=-9

The discriminant is

b^2 -4ac

Substituting into the equation

4^2 -4(2) (-9)

16 - (-72)

16+72

88

You might be interested in
One pound of shrimp costs $6.00. How much does 7/8 pound of shrimp cost?
professor190 [17]
$5.25, because if you multiply $6 by 7/8(fraction form), you get $5.25
7 0
3 years ago
Read 2 more answers
Question 2 of 5<br> Which best defines a ray?
Ede4ka [16]

Answer:

A ray is known as a half-infinity line. As it starts from a point while the other end is pointing towards the direction till infinity.

As already discussed ray shows a direction as well, therefore, it is a vector quantity and is denoted by an arrow over the line name.

As shown below a ray can be drawn. therefore,  which is starting from point A and continuing toward the right side infinity.

Step-by-step explanation:

I know math :)

5 0
2 years ago
What is 5 x 5 x 5 x 5 in exponential notation?
kramer

Answer:

5^4

Step-by-step explanation:

because 5 is multiplied 4 times

3 0
2 years ago
PLEASE HELP WILL MARK BRANIEST IF RIGHT
GREYUIT [131]
She a runner she a track star
7 0
3 years ago
Alexandria purchased a computer on sale. The original price was $1200. The sale price was 5/6 of the original price. how much di
Vaselesa [24]
I believe you ment to say sale price but I hope this helps you understand your question. The original price was 1200, and if it were 5/6 on sale (this method works for all questions like this) you would do 1200 ÷ 6 = 200 x 5 = $1000.
7 0
3 years ago
Other questions:
  • Can someone help me with these 2 questions? I'll give u the brainliest.
    5·1 answer
  • Researchers wanted to know if there is a link between proximity to​ high-tension wires and the rate of leukemia in children. To
    14·1 answer
  • Ian has 14 boxes of paper and divides them evenly between 4 coworkers. How many whole boxes did each coworker
    7·1 answer
  • 4 more than some number, n
    10·1 answer
  • Which is the equation in slope-intercept form of the line that contains points A and C? 
    12·1 answer
  • Chevy has some yarn that he wants to use to make hats and scarves. Each hat uses 0.2 kilograms of yarn and
    12·1 answer
  • 12. Which of the following pairs of numbers contains like fractions?
    8·1 answer
  • My Notes Let W(s, t) = F(u(s, t), v(s, t)), where F, u, and v are differentiable, and the following applies. u(2, −4) = 4 v(2, −
    10·1 answer
  • I need help with #7, I am not sure how to solve it and what interval means
    10·1 answer
  • Why did the Europeans come to north america
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!