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
Natasha2012 [34]
3 years ago
15

Find roots of 4x^2-2x+9

Mathematics
1 answer:
Korolek [52]3 years ago
4 0

discriminant= b^2-4ac= (-2)^2-4(4)(9)= -140<0

since discriminant <0, graph is always positive, x has no real roots

You might be interested in
Please please please help
Elina [12.6K]
Median of (72 82 92 93 94 97 98 102)
Median: 93.5
MAD : 7.125

Median of ( 53 59 64 65 65 66 67 69)
Median : 65
MAD : 3.75
4 0
3 years ago
12 = -4(-6x -3) +24
Reil [10]

Answer:

x = -1

Step-by-step explanation:

Solve for x:

12 = 24 - 4 (-6 x - 3)

-4 (-6 x - 3) = 24 x + 12:

12 = 24 x + 12 + 24

Grouping like terms, 24 x + 12 + 24 = 24 x + (12 + 24):

12 = 24 x + (12 + 24)

12 + 24 = 36:

12 = 24 x + 36

12 = 24 x + 36 is equivalent to 24 x + 36 = 12:

24 x + 36 = 12

Subtract 36 from both sides:

24 x + (36 - 36) = 12 - 36

36 - 36 = 0:

24 x = 12 - 36

12 - 36 = -24:

24 x = -24

Divide both sides of 24 x = -24 by 24:

(24 x)/24 = (-24)/24

24/24 = 1:

x = (-24)/24

The gcd of -24 and 24 is 24, so (-24)/24 = (24 (-1))/(24×1) = 24/24×-1 = -1:

Answer:  x = -1

8 0
3 years ago
2x+6&gt;2and 5x&lt; 6 + 2x
LiRa [457]

Answer:

-2 > x < 2

Step-by-step explanation:

Given that:

2x + 6 > 2

Subtracting 6 from both sides:

2x + 6 -6 > 2-6

2x > -4

Dividing by 2 on both sides:

x > -2

For second equation:

5x< 6 + 2x

Subtracting 2x from both sides:

5x - 2x < 6 + 2x -2x

3x < 6

Dividing by 3 on both sides:

x < 2

Result: -2 > x < 2

8 0
3 years ago
Write the percent based a fraction or mixed number in simplest form. #14
Minchanka [31]
31/40

replace 77.5 with 775/10
simplify to get 155/2
divide by 100 to get 31/40
8 0
3 years ago
Read 2 more answers
A line that includes the points (8,0) and (9,s) has a slope of 9. What is the value of s?
scZoUnD [109]

Answer:

s = 9

Step-by-step explanation:

We can find the slope given two points

m = (y2-y1)/(x2-x1)

 9 = (s-0)/(9-8)

 9 = (s)/1

S = 9

8 0
3 years ago
Other questions:
  • 4.2x−1.4y=2.1 in terms of y
    11·1 answer
  • (-2) + 4 = 4 + (-2)
    15·2 answers
  • Kenya wants to buy a car. Dealer A said she could pay $2000 upfront and $150 per month after. When will she have paid $3500
    12·2 answers
  • What is the volume of a box with a height of 3/2 inches, and then seven over2 inches and a width of five/2 inches
    5·1 answer
  • Part a : solve - vp + 40 &lt; 65 for v .
    11·1 answer
  • An actor invests some money at 7%, and $24000 more than four times the amount at 8%. The total annual interest earned from the i
    7·1 answer
  • What are the proofs
    15·1 answer
  • 3.
    10·2 answers
  • What is the slope of the line through (3, 3) and (0, 12)? Pls help due soon
    14·1 answer
  • 2. Find the length of a side of a square if its area is:
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!