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
kirill115 [55]
2 years ago
12

3k2-19=15k-1 solve by factoring

Mathematics
1 answer:
kow [346]2 years ago
6 0

For this case we must factor the following expression:

3k ^ 2-19 = 15k-1

We manipulate algebraically, taking into account that different signs are subtracted and the sign of the major is placed:

3k ^ 2-15k-19 + 1 = 0\\3k ^ 2-15k-18 = 0

We divide by 3 on both sides of the equation:

k ^ 2-5k-6 = 0

To factor, we look for two numbers that, when multiplied, result in -6 and when added, result in -5. These numbers are -6 and +1.

-6 + 1 = -5\\-6 * (+ 1) = - 6

Thus, we factor the equation:

(k-6) (k + 1) = 0

The roots of the equation are:

k_ {1} = 6\\k_ {2} = - 1

ANswer:

k_ {1} = 6\\k_ {2} = - 1

You might be interested in
For brainiest:):):):):):):):):):)
Andre45 [30]

Answer:

Polygons are many-sided figures, with sides that are line segments. Polygons are named according to the number of sides and angles they have. 1)draw a line of 7 in 2) draw a line of 10 cm

hope that help a little

Step-by-step explanation:

8 0
3 years ago
A candy company ships 1,200 candy bars to
krok68 [10]

Answer:

90 candy bars will be expired!

Step-by-step explanation:

40/3=1200/x

x = 90

8 0
3 years ago
Read 2 more answers
The ratio of red poms to yellow poms on a float is 5 to 7. if there are 392 yellow poms on the float, how many red poms are ther
Marysya12 [62]
Ratio is written in x:y. therefore for this case, red:yellow
5 : 7

since the question states that there are 392 yellow poms, the 7 units represents 392 yellow poms. now you have to gind what is one unit and then multiply by 5 to find the number of red poms.

392 represents 7 units
1 unit: 392/7=56
5 units: 5×56=280 red poms

therefore the answer is 280 red poms which is C.
4 0
3 years ago
The length of a rope is 12.072 centimeters. Is this number rational or irrational why
lilavasa [31]
12.072 is irrational because it cannot be simplified into a fraction or ratio.
7 0
3 years ago
Read 2 more answers
Y=3/4x - 6 find the x-intercept of the line
Ede4ka [16]

Answer:

The x intercept is (8,0)

Step-by-step explanation:

To find the x intercept set y = 0 and solve for x

Y=3/4x - 6

0 =3/4x - 6

6 = 3/4x

4/3 *6 = 4/3*3/4x

8 =x

The x intercept is (8,0)

4 0
3 years ago
Read 2 more answers
Other questions:
  • MATH HELP WILL MARK BRAINLIEST !!!!!!!!
    14·1 answer
  • Sketch the Cartesian product on the x-y plane R^2: Zx Z.
    8·1 answer
  • !!20 points!!! Determine which postulate or theorem can be used to prove that ABC = <br> DCB
    11·2 answers
  • Evaluate the expression 6 + 4x {3+ 7).
    13·2 answers
  • What is the solution to this equation?
    8·1 answer
  • The perimeter of a rectangle is 56 feet and
    9·1 answer
  • Please read carefully and answer
    6·1 answer
  • PLZ DO BOTH PARTS FOR 100 POINTS AND ILL DO ANYTHING!!!!
    11·2 answers
  • What is the solution to the equation?
    11·2 answers
  • Find the value of y.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!