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
Tanzania [10]
3 years ago
10

What is the value of the discriminant for the quadratic equation –3 = –x2 + 2x?

Mathematics
2 answers:
Leni [432]3 years ago
3 0

Answer:

16

Step-by-step explanation:

The quadratic equation –3 = –x2 + 2x must first be rewritten in standard form:  

x^2 - 2x - 3 = 0

or:

1x^2 - 2x - 3 = 0

The coefficients a, b and c are thus {1, -2, -3}, and therefore the discriminant, b^2 - 4ac, is

(-2)^2 - 4(1)(-3), or 4 + 12 = 16

emmainna [20.7K]3 years ago
3 0

Answer:

d) 16

Step-by-step explanation:

edge 2020-2021

You might be interested in
Need help please 50 minutes
Karolina [17]

I believe it's 3.75 x 10^5 (Sorry if I'm wrong)

6 0
4 years ago
What is the median?<br><br> 637743
Mariulka [41]

Answer:

5

Step-by-step explanation:

Put the numbers in order then find the middle number. 334677

Here there are two middle numbers, 4, and 6. Add 4 and 6 together, 10 then divide by 2, 5. So the median is 5! Hope this was helpful have a Great day!!!

8 0
3 years ago
A positive real number is 5 more than another. When - 10 times the smaller is added to the square of the larger, the result is 5
salantis [7]

Answer:

4√2 and 5+4√2

Step-by-step explanation:

Let the two numbers be x ad y

Smaller = y

Bigger = x

If a positive real number is 5 more than another, then;

x = 5 + y ... 1

When - 10 times the smaller is added to the square of the larger, the result is 57, then;

-10y + x² = 57 ...2

Substitute 1 into 2;

-10y + (5+y)² = 57

-10y + 25+10y+y² = 57  

y²+25 = 57

y² = 57 - 25

y² = 32

y = √32

y = 4√2

Since x = 5 + y

x = 5 + 4√2

Hence rhe numbers are 4√2 and 5+4√2

8 0
3 years ago
The owner of two hotels is ordering towels. He bought 84 hand towels and 22 bath towels for his hotel in Milford, spending a tot
Dmitrij [34]

Step-by-step explanation:

hand towel is $5

bath towel is $9

7 0
3 years ago
there are 120 children standing in a line,every third gets a rubber, every fourth child gets ruler and every fifth gets a book.
Kaylis [27]

Answer:

60th position is the first child that gets all 3 items

Step-by-step explanation:

Find the LCM of 3 , 5 and 4.

Least common multiple of 3 , 4 and 5 = 3 * 4 * 5 = 60

8 0
3 years ago
Read 2 more answers
Other questions:
  • A pharmaceutical saleswoman earns a base pay of $42,500 per year and a commission of 13% of all sales made. If she sold $39,800
    15·1 answer
  • What is answer to this question
    6·1 answer
  • Compare using &lt;, &gt;, or =.<br><br> 1/2 ___ 5/10 <br><br> &lt;<br> &gt;<br> =
    7·1 answer
  • 3. The 5th grade received 35 boxes of markers to split evenly between 6 classrooms. How many boxes will each classroom receive?
    6·2 answers
  • Pythagorean theorem:
    13·2 answers
  • Can someone please help me out with this multiple choice question?! (geometry)
    15·1 answer
  • How are the lengths of the four sides of the parallelogram related ?
    7·2 answers
  • Need help on this question!
    8·1 answer
  • Carl hits the target 50% pf the time he throws a ball at it. Carl uses a coin to simulate his next three pitches. The assigns H
    10·1 answer
  • A stone is thrown downward with a velocity of 88 feet
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!