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
Bezzdna [24]
3 years ago
7

What is the discriminant of the quadratic equation 0 = –x2 4x – 2? a.–4 b.8 c.12 d.24

Mathematics
1 answer:
MrMuchimi3 years ago
4 0
X^2 - 4x + 2
d = b^2 - 4ac, where a = 1, b = -4 and c = 2
d = (-4)^2 - 4 x 1 x 2
d = 16 - 8
d = 8
You might be interested in
24 PTS. MARK AS BRAINY!! Help me... I'm desperate... :(
Hunter-Best [27]

Answer: Its (5,-2)

Step-by-step explanation: When you reflect across the x-axis the y value changes.

4 0
3 years ago
Read 2 more answers
What is 23.70 divided by 8.1 laid out
tester [92]

Answer:

2.925925926 or 2.9

Step-by-step explanation:

23.7/8.1

= 2.925925926 or approximately 2.9

3 0
3 years ago
For a special event, a restaurant charges a one-time setup fee, plus a charge for each person attending the event. The charge fo
Rashid [163]

Any linear function is of the form y=mx+b

Here m is slope and b is y intercept.

Slope is difference in y divided by different in x values .

In the question for 5 persons cost is $100 and for 10 persons cost is $162.50

So the points are (5,100) and (10,162.50)

Slope m=\frac{162.50-100}{10-5}=12.50

We can find the value of b by taking m=12.50 and (x,y)=(5,100)

Substitute these values in y=mx+b

100=12.50(5)+b

100=62.50+b

Subtracting 62.50 both sides

b=100-62.50

b=37.5

a) Put m=12.50 and b=37.50 to get the equation

y=12.50x+37.50

b)Rate of change is the m value or the slope of the function.

Initial value that is (5,100) gives us one of the points to find the rate of change.

7 0
3 years ago
Sales increased by only 12% last month. If the sales from the previous month were $152,850, what were last months sales
Tamiku [17]

Answer:

\$171,192

Step-by-step explanation:

Remember that

100\%+12\%=112\%=112/100=1.12

we know that

The sales from the previous month were $152,850

This amount represent the 100%

so

Find out what were last months sales, multiply the sales from the previous month by the factor 1.12

\$152,850(1.12)=\$171,192

3 0
3 years ago
The temperature falls from 10°F to -15° F. What is the difference in these<br> temperatures?
nadya68 [22]

Answer:

the difference is 25

Step-by-step explanation:

to get from 10 to 0 is 10 units and from 0 to -15 is 15

10+15 = 25

8 0
3 years ago
Other questions:
  • A researcher examines 27 sedimentary samples for bromide concentration. The mean bromide concentration for the sample data is 0.
    10·1 answer
  • If a petition is filed against a child for truancy, this means that the child has committed what offense?
    8·1 answer
  • Is d=45t a linear function
    6·1 answer
  • What are the vertex and x intercepts of the graph of y=(x-4)(x+2)? Select one answer for the vertex and one answer for the x int
    6·1 answer
  • Find the constant difference for a hyperbola with foci (-3.5, 0) and (3.5, 0) and a point on the hyperbola (3. 5, 24).
    15·1 answer
  • Q)READ THE CLUES TO FIND THE MYSTERY NUMBER.
    11·1 answer
  • You are offered two summer jobs. The first job pays $20 for each day of work. The second
    13·1 answer
  • The number of deer in Georgia increased by 2,300 last year. Which of the situations below, when combined with that increase, wil
    13·1 answer
  • Tobey, Finn, and Mary rode their bicycles in the park.
    13·2 answers
  • Two six-sided dice are rolled. Using the sample space for rolling two dice shown in the figure below, find the probability that
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!