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
Alexxandr [17]
3 years ago
6

What is x2 + 2x + 9 = 0

Mathematics
1 answer:
vova2212 [387]3 years ago
4 0

Answer:

x has no real solution

Step-by-step explanation:

Our equation is qudratic equation so the method we will follow to solve it is using the dicriminant :

  • Let Δ be the dicriminant
  • a=1
  • b=2
  • c=9
  • Δ= 2²-4*1*9 =4-36=-32
  • we notice that Δ≤0⇒x has no real solution

You might be interested in
Last year, you had a garden in your back yard with an area of 200 ft. This year, you increased the area of the garden by 24%. Wh
Rasek [7]
It's 248 ft because it increased by 24%, you do 200 ft times 1.24 to get 248 ft.
6 0
3 years ago
Read 2 more answers
Lillian bought 2.52 pounds of tomatoes and 1.26 pounds of lettuce to make a salad for 18 people. If each person got the same amo
Nuetrik [128]
2.52 pounds + 1.26 pounds = 3.78 pounds of salad ÷ 18 people = .21 pounds of salad per person

you add the pounds because that is everything she used to make the salad. then you divide by 18 because there are 18 people eating the salad and everyone gets exactly the same amount. Hope this helps :) this should help if you have more questions like this :)
(x pounds + y pounds = total pounds, total pounds ÷ # of people = pounds per person)
6 0
3 years ago
Read 2 more answers
12 – 7x ≤-2 <br> solve and show work
vova2212 [387]

Answer:

x≥2

Step-by-step explanation:

Let's solve your inequality step-by-step.

12−7x≤−2

Step 1: Simplify both sides of the inequality.

−7x+12≤−2

Step 2: Subtract 12 from both sides.

−7x+12−12≤−2−12

−7x≤−14

Step 3: Divide both sides by -7.

−7x/−7 ≤ −14/−7

x≥2

8 0
2 years ago
To rent a certain meeting room, a college charges a reservation fee of $49 and an additional fee of $7.80 per hour. the math clu
yulyashka [42]
The math club could rent the room for up to 8 hours. I have also attached a picture of the work in case you need it.

4 0
3 years ago
Read 2 more answers
Is it essary to rename 4 1/4 if you subtract 3/4 from it.
Archy [21]
No . because you would then have 2/4 which is 1/2 50%

3 0
3 years ago
Other questions:
  • The following phrase is an algebraic expression. Use Z for the unknown.
    5·1 answer
  • Mr George has $59.75 in his bank account, but then he bought some new ties and some pancakes. After the purchase, he was in debt
    5·1 answer
  • on a map the distance between two historical markers in 4.5 in in 2.5 in inches represents 10 mi what is the actual distance bet
    6·2 answers
  • Write the slope-intercept form of the equation through (4, 2) perpendicular to y=4x-4
    8·1 answer
  • A population has the following characteristics. (a) A total of 25% of the population survives the first year. Of that 25%, 75% s
    8·1 answer
  • (no links please) For each inequality, decide whether the solution is represented by
    9·1 answer
  • What is the difference in length between 1 1/4 inch button and 3/8 inch button
    9·1 answer
  • Answer Please........​
    8·1 answer
  • John and his 5 friends will share 1 1/2 pizzas if they share the pizzas equally how much pizza will each person get
    14·1 answer
  • One line passes through the points (−1,6) and (2,0). A second line passes through the points (−5,5) and (−1,9). At what point do
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!