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
Alchen [17]
3 years ago
11

It is known that x=7 is a root of the equation ax^2 + bx + 2= 0, where a<0. Solve the inequality ax²4 +bx^2 + 2>0.

Mathematics
1 answer:
kap26 [50]3 years ago
7 0

Answer:

2/(7a) < x < 7

Step-by-step explanation:

The product of roots of ax² +bx +c is c/a. In this case, that means the second root of the equation is ...

... 2/(7a)

Since a < 0, the parabola opens downward and 2/(7a) < 0. The quadratic function will be positive between the two roots, on the interval ...

... 2/(7a) < x < 7

You might be interested in
Which expression is not equivalent to 2/3 x4
Ksenya-84 [330]

Answer:

I don't know I need the answer choices

Step-by-step explanation:

3 0
2 years ago
your friends says that an exterior angle can never be complementary to any of the interior angles in a triangle?
rusak2 [61]
Exterior angles are complementary to the opposite interior angle 

6 0
3 years ago
Read 2 more answers
Is this correct?- <br><br> Also please don’t just say “yes” or “no”-
hichkok12 [17]

Answer:

a) No

b) No

c) No

d) Yes

3 0
3 years ago
The ratio of boys to girl at the dance was 9 to 5.how many girls were at the dance if there were 85 girls ar the dance
liq [111]

Answer:

153

Step-by-step explanation:

ans.

5x=85

x =85÷5

=17

9x=17x9

=153

6 0
2 years ago
Can someone help me with this question please?
WITCHER [35]

Answer:

3

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • Manuel Fraser’s bank granted him a single-payment loan of $9,650. He agreed to repay the loan in 146 days at an ordinary interes
    15·2 answers
  • Write two expressions<br><br> where the solution is 19
    9·2 answers
  • A farmer collected 12 dozen eggs from her chickens. She sold 5/ of the eggs at the farmer's market, and gave the rest to friends
    9·1 answer
  • She made her fortune by inventing and selling specialized hair products, including an innovative Edge Control product that sold
    8·1 answer
  • Which of the following could be the graph of y = –xn where n is odd?
    10·1 answer
  • A=1/2h(B+b);A=81,B=8,b=1 what is h
    13·2 answers
  • The product of two numbers is -12. One of the numbers is 4. What is the<br> other number? _____
    12·2 answers
  • K' (-2.5, -0.5) is the imagine of P after a dilation centered at the origin with a scale factor of 1/4. What are the coordinates
    15·1 answer
  • One number is two times greater than another number. if the greater number is x what is the other number?
    5·1 answer
  • 1 + (x + 44) = (1 + x) + 44 name the property
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!