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
RoseWind [281]
3 years ago
7

What are the solutions of 6x2 + 2x – 20 = 0? x = x =

Mathematics
1 answer:
Darina [25.2K]3 years ago
3 0

6x² + 2x - 20 = 0

3(2x² + x - 10) = 0

3[(2x² - 4x + 5x - 10)] = 0

3[2x(x - 2) + 5(x - 2)] = 0

3(2x + 5)(x - 2) = 0

3=0, 2x + 5 = 0, x - 2 = 0 (Note: 3=0 is false so disregard that equation)

x = \frac{-5}{2} , x = 2

Answer: x = {\frac{-5}{2}, 2}



You might be interested in
In the figure below, ⎯⎯⎯⎯⎯⎯⎯⎯,⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯, and ⎯⎯⎯⎯⎯⎯⎯⎯⎯ are medians of △. If KC = 108 and OC = 2n+10, then n=
Nimfa-mama [501]

The question was incomplete. Below you will find the missing content.

In the figure below, BL, AM, and CK are medians of △ABC. If KC = 108 and OC = 2n + 10, then n=

The picture is attached below.

The value of n is 31.

The median is the line connecting the vertex and its midpoint on the opposite side of the triangle.

The intersection of all 3 medians of the triangle is called the centroid.

As we know centroid divides the median in the ratio of 2:1.

In the given picture,

Medians of triangle △ABC are AM, BL, and CK.

So the centroid of the triangle is O.

Given that KC= 108

As the centroid O divides the line KC in 2:1.

Let OC=2x

KO= X

As KC= KO+OC

⇒ 108= x+2x

⇒ 3x=108

⇒ x=108/3

⇒ x=36

Then OC= 2x= 2*36= 72

As given in the question OC= 2n+10

putting the value of OC in above equation

⇒ 72= 2n+10

⇒ 2n= 72-10

⇒ 2n=62

⇒ n=62/2

⇒n=31

Therefore the value of n is 31.

Learn more about the median of the triangle

here: brainly.com/question/2264495

#SPJ10

5 0
2 years ago
Simplify. 1/4y+1 1/2+2−1 3/4y−1/2
Ratling [72]
Your final answer for this question is -3(y-2)/2. Hope this helps.
8 0
3 years ago
Read 2 more answers
What is the answer for "?" please.​
scoundrel [369]

Answer:

24 inches

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The sets F and H are given below.
Vinil7 [7]

Answer:

  F ∪ H = {c, d, e, f, g, h}

  F ∩ H = { }

Step-by-step explanation:

The union is the list of elements that are in either of the two sets.

  F ∪ H = {c, d, e, f, g, h}

The intersection is the list of only those elements that appear in both sets. (There are none.)

  F ∩ H = { } . . . . the empty set

4 0
3 years ago
1. Martin can pour a concrete walkway in 6 hours working alone. Victor has
Bond [772]

Answer:

2.4 hr. = time working together

Step-by-step explanation:

Let x = time working together

x/6 = work done by Martin

x/4 = work done by Victor

Martin's part + Victor's part = 1 jog done

x/6 + x/4 = 1  Multiply thru by 12

2x + 3x = 12

5x = 12

x = 2.4 hr.

6 0
3 years ago
Other questions:
  • The temperature at a point (x, y, z) is given by t(x, y, z) = 200e−x2 − 5y2 − 9z2 where t is measured in °c and x, y, z in meter
    10·1 answer
  • How many 1/3 inch pieces can be cut from 7/15 of an inch long
    6·1 answer
  • How many integers less than 1000 have no factors (other than 1) in common with 1000?
    15·2 answers
  • Let f(x) = x 7 and g(x) = x − 4. find f(x) ⋅ g(x).
    8·2 answers
  • Write as a fraction or mixed number in simplest form. <br> 0.548
    11·1 answer
  • How many pairs of parallel lines have in a trapezoid
    9·2 answers
  • G find the jacobian of the transformation. x = 6e−3r sin 2θ, y = e3r cos 2θ
    14·1 answer
  • Find the area of the given triangle.
    11·2 answers
  • ✨question,✨ how do I change my ✨name✨ on here or can I ✨not✨​
    11·2 answers
  • Write the expanded version of each expression <br><br> x(13 + 12y - 3)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!