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
Lubov Fominskaja [6]
3 years ago
6

What is the discriminant of the polynomial below 2x^2+5x-8

Mathematics
1 answer:
Mademuasel [1]3 years ago
4 0

Answer:

89 2 irrational roots

Step-by-step explanation:

The discriminant Is b²-4ac when the equation is in the form

ax²+bx+c so in the equation

a=2 b=5 and c=-8

plug into the equation for the discriminant

so 5²-4(2)(-8)

25-(-64) 2 negatives make a positive so

25+64=89

since 89 isn’t a perfect square 2 irrational roots

You might be interested in
What is the slope of y=4-6x
julia-pushkina [17]

Answer:

the slope, m, is -6

Step-by-step explanation:

One of the most commonly used equations for a straight line is y = mx + b, where m is the slope and b is the y-intercept.

Comparing  y=4-6x to y = b + mx, we see that the slope, m, is -6 and the y-intercept, b, is 4.

4 0
3 years ago
Read 2 more answers
Two equations are given below: a – 3b = 9 a = b – 3 What is the solution to the set of equations in the form (a, b)?
Vilka [71]
A-3b=9
a=b-3

b-3-3b=9
-2b-3=9
-2b=12
2b=-12
b=-6

a=-6-3
a=-9

Solution: (-9,-6)
----
Check: 
-9=-6-3
-9=-9
TRUE


7 0
3 years ago
Read 2 more answers
What type of polygon is shown
REY [17]
Triangle b because it only has 3 sides
5 0
2 years ago
Kim ran a mile in PE class. After resting for 1 hour her heart rate was 75 beats per minute. If her heart rate decreased by ⅖ ,
Andreas93 [3]

Answer:

125

Step-by-step explanation:

since you take away 2/5 of the original number to get 75, 75 is equal to 3/5's of the original. You then divide 75 by 3, get 25, then multiply 25 by 5 to find the answer which is 125.

6 0
2 years ago
Find the length of CA to the nearest tenth of a foot
hoa [83]

Answer:

CA ≈ 3.1 ft

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan40° = \frac{opposite}{adjacent} = \frac{BC}{CA} = \frac{2.6}{CA} ( multiply both sides by CA )

CA × tan40° = 2.6 ( divide both sides by tan40° )

CA = \frac{2.6}{tan40} ≈ 3.1 ft ( to the nearest tenth )

3 0
2 years ago
Other questions:
  • A rescue company determined that 90 out of 100 calls they received were true emergencies. Which describes the fraction of their
    12·1 answer
  • 30 POINTS! x + 1 = 2 ÷ x + 1
    5·1 answer
  • P3. (3+5 points) Let k be any natural number. (a) Prove that for every positive integer n, we have σk(n) = σ−k(n)n k . Conclude
    14·1 answer
  • 1/3 is greater or less than 1
    11·2 answers
  • Reid's Hardware discounts all riding lawnmowers 6% to customers paying in cash. If Trey paid $1,278.75 in cash for a riding lawn
    9·1 answer
  • A city has a population of 370,000 people. Suppose that each year the population grows by 4.25%. What will the population be aft
    5·1 answer
  • 1
    12·2 answers
  • Please help it’s due in ten minutes!!!
    9·1 answer
  • What is the volume of this square pyramid?<br> Enter your answer in the box.<br> ____ cm^3
    9·1 answer
  • Plz solve this question​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!