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
slavikrds [6]
2 years ago
7

❗ANSWER+EXPLANATION=100POINTS+BRAINLIEST❗solve: (x+2)(5x-1)=0thanks)​

Mathematics
2 answers:
Sladkaya [172]2 years ago
6 0
<h3><u>Question</u><u>:</u><u>-</u></h3>

solve: (x+2)(5x-1)=0

<h3><u>Answer</u><u>:</u><u>-</u></h3>

x = 1/5

x = -2

<h3><u>Explanation</u><u>:</u><u>-</u></h3>

=> (x+2)(5x-1) = 0

=> x(5x-1) + 2(5x-1) = 0

=> 5x²- x + 10x - 2 = 0

=> 5x² + 9x - 2 = 0

  • Plug them into quadratic formula.

=> x = -9 ± √9²-4×5(-2) / 2×5 = -9 ± 11/10

  • To solve for the unknown variable, separate into two equations.... One with a plus and the other with a minus.

=> x = -9 + 11/10

=> x = -9 - 11/10

  • Rearrange and isolate variables and find each solution.

x = 1/5

x = -2

IrinaVladis [17]2 years ago
4 0

The solution to the given quadratic equation is;

x = -2 and x = 1/5

<h3>Roots of quadratic Equation </h3>

We are given the quadratic function;

(x + 2)(5x - 1) = 0

In quadratic functions, when it is expressed as;

(x + a)(x - b) = 0, what this means is that the factors of the quadratic equation or polynomial are; (x + a) and (x - b)

What that means is that the roots will be gotten from;

(x + a) = 0 and (x - b) = 0

Thus, applying the concept above on roots of a polynomial to our question, we have;

(x + 2) = 0 and 5x - 1 = 0

Solving them gives us;

x = -2 and x = 1/5

Read more on roots of quadratic equation at; brainly.com/question/8649555

You might be interested in
I will make u brainlest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Aliun [14]

Answer:

Answer is D

Step-by-step explanation:

Hope that helps

3 0
2 years ago
Please help will give brainliest and extra points.
Elza [17]

Im not sure about the given data but I plotted the scatter plot based on what I understand on how the data should be presented.

Time (years)

3, 6, 9, 12, 15, 18, 21, 24

Number of participants(x1000)

22, 25, 28, 14, 17, 20,15, 9

Attached is the scatter plot created online.

x = time (years)

y = number of participantep explanation

7 0
3 years ago
Develop an estimated multiple linear regression model that could be used to predict the alumni giving rate using the graduation
madam [21]
The answer to this question is false that's the answer
4 0
3 years ago
An engineer accident What is the combined thrust of the rocket if Stage A is firing normally, but Stage B is applying reverse (n
Aleks [24]

Answer:

i  think 64 for your answer

Step-by-step explanation:

4 0
3 years ago
Subtract 4 1/5-2 1/2 please help!!!!!
Mila [183]
<span>4 1/5-2 1/2 = 1.7

1.7 to fraction is 1 7/10

Answer: 1 7/10</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • The perimeter of the original rectangle on the left is 30 meters. The perimeter of the reduced rectangle on the right is 24 mete
    9·2 answers
  • 8/7 = 12/k what is k
    11·1 answer
  • Which equation can be used to solve the matrix equation?
    8·2 answers
  • Find 8x+y when x=2 and y=5.
    6·1 answer
  • List 3 values that would make this inequality true 42 ≤ 24 + y
    15·2 answers
  • Please help!!
    5·2 answers
  • What is the distance between the points (-4, 8) and (10,-8)?
    9·2 answers
  • Describe the end behavior for both of these please! I only have a limited time left so please be quick thank you!!
    5·1 answer
  • Hi i just need the missing side for these thanks in advance.
    6·2 answers
  • Help please i need to do this quickly
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!