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
tatiyna
3 years ago
6

Find the discriminant and the number of real roots for this equation. x2 + 2x + 7 = 0

Mathematics
1 answer:
zavuch27 [327]3 years ago
8 0

Answer:

Discriminant = -24

No real roots.

Step-by-step explanation:

x^2 + 2x + 7 = 0

The discriminant = b^2 - 4ac

= 2^2 - 4*1*7

= -24

So there are no real roots.

You might be interested in
Help with practice problem
fenix001 [56]

Answer:

y = 2x - 6

Step-by-step explanation:

For parallel lines, the mx (the slope) stays the same but the y-int changes.

7 0
2 years ago
HELP PLS ASAP<br><br><br><br> -5 = 5/12a pls evaluate
Setler79 [48]

Answer:

a = -12

Remember that when a variable is times with a number, you <u>divide</u> the number on both sides.

When a variable is divided by a number, you <u>multiply</u> the number on both sides.

Hope this helps you. Thank you !!

6 0
3 years ago
Write this expression in simplified form.<br> -5x^6*9x^5
masya89 [10]

Answer:

-45x^11

Step-by-step explanation:

-5x^6 * 9x^5

Multiply -5x and 9x together:

-45x

Remember when multiplying powers, you add them together, which leaves you with:

-45x^11

5 0
3 years ago
The table below shows the numbers of tickets sold at a movie theater on Friday.
sleet_krkn [62]

Answer:

Number of Adult's tickets sold on Saturday = 3,356

Number of Children's tickets sold on Saturday = 2, 928

Total number of tickets sold over these two days is 8,938.

Step-by-step explanation:

Here, the number of tickets sold on FRIDAY:

Adult Ticket sold = 1,678

Children's Tickets sold = 976

So, the total number of tickets sold on Friday  

= Sum of ( Adult + Children's ) tickets  = 1,678  + 976 = 2,654 ....  (1)

The number of tickets sold on SATURDAY:

Adult Ticket sold =   2 times as many as the number of adult tickets sold

on Friday

=  1,678 x 2  = 3,356

Children's Tickets sold = 3 times as many as the number of children's

tickets sold on Friday.

=  976  x 3 = 2, 928

So, the total number of tickets sold on Saturday  

= Sum of ( Adult + Children's ) tickets  = 3,356 + 2,928 = 6, 284 ....  (2)

Now, the total number of tickets booked in these two days :

Sum of tickets booked on (Friday + Saturday)

= 2,654 +  6, 284  =   8,938

Hence, total number of tickets sold over these two days is 8,938.

7 0
3 years ago
Help ur bestie out plzzz (puppy eyes) and show me how u got the answer thx
Mama L [17]

I think the answer is D. But I am not sure if that's the right answer.

8 0
2 years ago
Other questions:
  • A jug holds 5 gallons of water. If a glass holds 4 ounces of water, how many glasses can be drawn from the water jug?
    9·1 answer
  • What is 3 and 2/3 minus 1 and 1/6. can I have a smart answer please. geez!!!!!!!
    10·2 answers
  • What is the weight of the piece of aluminum shown below at 0.0974 ​lb/​in^3? ​(Hint: Subtract the volume of the cylindrical​ hol
    12·1 answer
  • Dilacey takes out a loan from the bank that charges a 10% interest rate. After 18 months, she accrues $420 in simple interest. H
    15·2 answers
  • A teacher believes that the third homework assignment is a key predictor in how well students will do on the midterm. Let x repr
    15·1 answer
  • Which of the following is equivalent to 24/80
    13·2 answers
  • In a triangle, one side length is 4 feet and another side length is 7 feet. Which answers are possible lengths for the third sid
    11·1 answer
  • What is 2 3/8 in a improper fraction?
    10·2 answers
  • Find the probability of the event.
    15·1 answer
  • How many whole numbers are there between 32 and 96?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!