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
Margarita [4]
3 years ago
12

14. Solve: 3x² + 5x – 12 = 0B. 4-3C. 8, - 18​

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
7 0

Answer:

b

Step-by-step explanation:

The equation:

3

x

2

−

5

x

−

12

=

0

is in the form:

a

x

2

+

b

x

+

c

=

0

with  

a

=

3

,  

b

=

−

5

,  

c

=

−

12

The roots are given by the quadratic formula:

x

=

−

b

±

√

b

2

−

4

a

c

2

a

x

=

5

±

√

(

−

5

)

2

−

4

(

3

)

(

−

12

)

2

(

3

)

x

=

5

±

√

25

+

144

6

x

=

5

±

√

169

6

x

=

5

±

13

6

That is:

x

=

5

+

13

6

=

18

6

=

3

 

or  

 

x

=

5

−

13

6

=

−

8

6

=

−

4

3

You might be interested in
What is the surface area of this design 5,8,4,8,4 inch
Gwar [14]

Answer:

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Step-by-step explanation:

5 0
2 years ago
The velocity of a skydiver t seconds after jumping is given by V(t)= 80(1-e^-.2t). After how many seconds is the velocity 120 ft
Ad libitum [116K]

Answer:

∞

Step-by-step explanation:

The equation describes a velocity curve that has an asymptote of 80 ft/s. The skydiver will <em>never</em> have a velocity of 120 ft/s.

6 0
3 years ago
Explain what the slope of a linear relationship is.
Brums [2.3K]
The slope is the same as rate of change. In a linear graph, it is the change in y over the change in x.
8 0
3 years ago
SIMPLIFY 7/10+1/4-1/5=
Strike441 [17]

Answer:

3/4

Step-by-step explanation:

Q = \frac{7}{10} +\frac{1}{4} -\frac{1}{5}      

{the smallest common multiple of 10, 4 and 5 is 5×2×2 = 20 (denominator)}

Q =\frac{7×2}{10×2} +\frac{1×5}{4×5} -\frac{1×4}{5×4}

=\frac{14}{20} +\frac{5}{20} -\frac{4}{20}

=\frac{14+5-4}{20}

=\frac{15}{20}

=\frac{3×5}{4×5}

=\frac{3}{4}

4 0
3 years ago
Plz help been stuck on it for awhile
sergejj [24]

Step-by-step explanation:

Transitive property of Angle Congruence

5 0
2 years ago
Other questions:
  • PLEASE HELP ME FAST!!!!!!
    14·1 answer
  • Suppose that there are three astronauts outside a spaceship and they decide to play catch. all the astronauts weigh the same on
    12·1 answer
  • Allison wants to cut out a rectangle with an area of 54 inches. She has one piece of paper measuring 9 by 12 inches. How many re
    14·1 answer
  • A ball is thrown into the air with an upward velocity of 80 feet per second. The function
    15·2 answers
  • Please I really need an A on this I will let you know the answers when Im done
    15·1 answer
  • 1) What are the zeros of f(x) = (x + 4)(x – 7)?
    8·2 answers
  • How do i find the slope of 5x-12y=24??
    7·1 answer
  • Is 2(6-3x+x equal to 2(3x)+x
    8·1 answer
  • Album sells for 7 percent sales tax and 10 percent off what is the total price including tax
    7·2 answers
  • 8. What's the sum of 38 and 1/16?<br> A. 4/24<br> B.1/6<br> c.7/16<br> D. 1/4.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!