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
uranmaximum [27]
3 years ago
14

f(x)= -4x^2+10x-8 what is the value of the discriminant of f how many distinct real number zeros does f have

Mathematics
1 answer:
Mazyrski [523]3 years ago
4 0

Answer:

Step-by-step explanation:

The function is f(x) = -4x²+10x-8

Let Δ be our the dicriminant

  • Δ= b²-4ac
  • b = 10
  • a = -4
  • c = -8
  • Δ = 10²-4*(-4)(-8)
  • Δ = 100-128
  • Δ = -28

The value of the discriminant is -28 and since it is negative this function has no real zeroes

You might be interested in
What is the least common denominator of 1/3 and 4/7?
jolli1 [7]

Answer:

21

Step-by-step explanation:

The denominators are 3 and 7 and those are both odd numbers.

You can not get a number lower than 21. Therefore 21 is the LCM (Lowest common denominator.)  

Hope this helps :)

5 0
3 years ago
I need help fast please I don’t understand this and I’ve been struggling for a while. Can I get a brain list please or a tutor t
solong [7]

Answer:

4 √6

Step-by-step explanation:

We have a few right triangles. We know that a²+b²=c², with c being the side opposite the right angle. Representing the side without a value as z, we have:

m²+z² = (8+4)² = 12²

4²+n²=z²

8²+n²=m²

We have 3 equations with 3 unknown variables, so this should be solvable. One way to find a solution is to put everything in terms of m and go from there. First, we can take n out of the equations entirely, removing one variable. We can do this by solving for it in terms of z and plugging that into the third equation, removing a variable as well as an equation.

4²+n²=z²

subtract 4²=16 from both sides

z²-16 = n²

plug that into the third equation

64 + z² - 16 = m²

48 + z² = m²

subtract 48 from both sides to solve for z²

z² = m² - 48

plug that into the first equation

m² + m² - 48 = 144

2m² - 48 = 144

add 48 to both sides to isolate the m² and its coefficient

192 = 2m²

divide both sides by 2 to isolate the m²

96 = m²

square root both sides to solve for m

√96 = m

we know that 96 = 16 * 6, and 16 = 4², so

m = √96 = √(4²*6) = 4 √6

5 0
2 years ago
How do you inverse 3x-4y=6
vladimir1956 [14]

Answer:

To find the inverse you switch x and y

Step-by-step explanation:

3y-4x=6

So 3y = 4x+6

and Y = 4/3x + 2

5 0
3 years ago
Read 2 more answers
HELP!! what inequality is this??
anyanavicka [17]

Answer: y <= 2x+3 or 2x+3 >= y

Step-by-step explanation: Assuming each interval is one unit

8 0
2 years ago
A shopkeeper bought some eggs at ¢15 each. Six of them were broken while the rest were sold at ¢20 each. If he made a profit of
zvonat [6]
In the given problem it is already stated that the cost of each eggs is 15 cent. Out the total eggs bought 6 were broken. The rest of the eggs were sold for 20 cents each and the profit made was $4.80.
Cost of the 6 broken eggs = (6 * 0.15)
                                           = 0.9 cents
Let us assume that the number of eggs bought = x
Then we can write the equation as
0.2x - (0.15x - 0.9) = 4.80
0.2x - 0.15x + 0.9 = 4.80
0.05x = 4.80 - 0.9
0.05x = 3.9
x = 3.9/0.05
   = 78
So the number of eggs bought by him is 78
6 0
3 years ago
Other questions:
  • 5w – 9 = 5 + 3w<br><br> WHAT IS W?
    9·2 answers
  • What is the Y intercept for 2/3xplus1 and graph to show
    5·1 answer
  • Evaluate the expression y-x+ z for x = 4.6, y=6, and z=0.59
    7·1 answer
  • Find the probability that when a couple has sixsix ​children, at least one of them is a girlgirl. ​(assume that boys and girls a
    13·1 answer
  • Determine whether the series is convergent or divergent by expressing Sn as a telescoping sum. If it is convergent, find its sum
    7·1 answer
  • The equation 9 X 3 = 27 is used to find the area. Explain what
    10·1 answer
  • A town recreation hall needs to build a ramp. The height of the ramp must be 2 ft. The ramp will start 6 ft from the door. To th
    9·1 answer
  • Solve the equation:<br> -4x - 12 = 8
    10·2 answers
  • Sara earns $80.50 for 7 hours of pet sitting. She earns the same amount per hour each time she pet sits. How many hours does Sar
    6·2 answers
  • Find the distance of A (6,8) origin​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!