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
Anestetic [448]
3 years ago
5

Explain why 3x^2+kx-1 is never always positive for any value of k

Mathematics
1 answer:
lianna [129]3 years ago
8 0
Hello : 
<span>(3x²+kx-1) is a quadratic polynome when : a =3  , b=k , c= -1
the discriminat  </span>Δ = b²-4ac ≥ 0 because ac = -3 <span><<span> 0
-4ac </span></span>>0  and b²<span>≥0
the </span> quadratic polynome has :2 solutios or 1 solution (Change of sign)
conclusion :   <span>is never always positive for any value of k</span>
You might be interested in
Todos os números pares​
solniwko [45]

Answer:

en que te ayudo

Step-by-step explanation:

TIENES TAREA

5 0
3 years ago
How do you determine whether a sum will be positive, negative, or 0 when adding a positive and a negative integer?
professor190 [17]
If the integers have the same absolute value ... they're the same number
but with different signs ... then their sum is zero.

Example:    (plus) 927 added to (negative) 927  =  zero


If the integers have different absolute values ... they're different numbers with different
signs ... then their sum has the same sign as the one with the bigger absolute value.

Examples:

==>   (plus) 92 added to (negative) 91
         92 and 91 are 1 number apart on the number line.
         The positive number is bigger than the negative number.
         So the sum is  +1 . 

==>    (plus) 35 added to (negative) 37
          35 and 37 are 2 numbers apart on the number line.
          The negative number is bigger than the positive one.
          So the sum is  -2 .
3 0
2 years ago
F(x)=(x+2)^3-4<br> What is the slope?
kipiarov [429]
Use the slope-intercept y=mx+b to find slope
Slope=m
M=3
4 0
2 years ago
Read 2 more answers
PLZ HELP ME I WILL BRAINLIST YOU
AURORKA [14]

Answer:

B.   15 units^{2}

Step-by-step explanation:

4 0
3 years ago
URGENT
Dmitry [639]

Answer:

AAA

Step-by-step explanation:

angles are equal because two pairs are of alternate angles and one of vertically opposite angles

8 0
3 years ago
Other questions:
  • A parallelogram has side length of 9x+12 and 3x-4.what is the perimeter ?
    14·1 answer
  • The surface area of a die is 600 mm squared. What is the volume of the die?
    6·1 answer
  • I’m stuck on this one: farmer brown can harvest 2 1/3 acres of corn in 1 day. How many acres of corn can he harvest in 10 1/2 da
    5·1 answer
  • For a store contest four out of 65 people who visit the store will receive a free DVD if 455 people visit the store how many DVD
    10·1 answer
  • Find slope of (-3,3)(2,1)
    15·2 answers
  • What is the approximate surface area of the sphere c=37.68?
    15·1 answer
  • Consider the random experiment of tossing 3 fair coins and observing how many of them come to rest with the heads side of the co
    6·1 answer
  • HELP PLEASE!
    10·1 answer
  • A beetle was running along a number line, Then the bug ran from 28 to 78. What distance did it cover? If this run took the bug 9
    15·1 answer
  • Powers of 10 and Exponents (number 4 is a 10 incase u can’t see of the ripped page.)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!