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
nlexa [21]
3 years ago
12

What is the factor of y = 4x2 +2x -30

Mathematics
1 answer:
Korolek [52]3 years ago
5 0
<span>What are the factors of y=4x^2 + 2x - 30?

First, divide 2 out of this expression.  y = 2(2x^2 + x - 30)

One way to factor this would be to find the roots using the quadratic formula:

Since a=2, b=1 and c= -15, 
        -1 plus or minus sqrt(1^2-4(2)(-15)
x = -------------------------------------------------
                           4
         -1 plus or minus sqrt(121)         -1 plus or minus 11
    = -------------------------------------- = ----------------------------
                        4                                            4

One such solution is -12/4, or -3.  The corresponding factor is (x+3), and the other is 5/2, leading to the factor (2x-5).

Therefore, </span><span>4x^2 + 2x - 30 = y = 2(2x-5)(x+3).</span>
You might be interested in
A circle is centered on point B, Points A, C and D lie on its circumference. if ABC measures 46 degrees, what does ADC measures?
den301095 [7]
Answer: 23 degrees

---------------------------------------
---------------------------------------

Explanation:

Using the inscribed angle theorem we can connect the central angle ABC and the inscribed angle ADC. The reason why is because they both cut off the minor arc AC

Angle ABC is given to be 46 degrees, the formula we use is shown below

central angle = 2*(inscribed angle)
angle ABC = 2*(angle ADC)
46 = 2*(angle ADC)
46/2 = 2*(angle ADC)/2 ... divide both sides by 2
23 = angle ADC
angle ADC = 23 degrees

5 0
2 years ago
PLEASE HELP REAL ANSWERS!
Norma-Jean [14]
I’m sorry i don’t know but i’m thinking it’s B not sure tho
6 0
2 years ago
(3x + 10y 2-20<br> { 3x + 2y &gt; 4
dmitriy555 [2]

Answer:

Multiply each equation by the value that makes the coefficients of

x

opposite.

(

−

3

)

⋅

(

2

x

+

5

y

)

=

(

−

3

)

(

20

)

(

2

)

⋅

(

3

x

−

10

y

)

=

(

2

)

(

37

)

Step-by-step explanation:

8 0
3 years ago
Half of the students in Max's class volunteer at the local community center.Fifteen students do not volunteer.If there are 12 bo
Crazy boy [7]
The answer is 18. the equation is (15 x 2) - 12. hope I helped :)
3 0
2 years ago
Read 2 more answers
Researches conducted a study to determine whether magnets are effective
Ad libitum [116K]
What is the question though
8 0
2 years ago
Other questions:
  • What is 36 divided by 70
    9·1 answer
  • What is the percent of increase of 42 is increased to 72
    9·2 answers
  • a box of granola contains 16.8 ounces. It costs &amp;5.19. What is the cost, to the nearest cent, of the granola per ounce ? Som
    5·1 answer
  • Need help on this question (:
    10·1 answer
  • sarah invests £9600 at a simple interest rate of 8% per year. Work out the value of the investment after 3 years
    13·2 answers
  • 1/3m + L is greater than or equal to 8 <br><br> solve the inequality for L
    12·1 answer
  • -5x^5+35x^4-30x^3 can someone help me pls
    8·1 answer
  • Four friends are on a basketball team. During a game, each friend kept track of how many shots they attempted and how many of th
    6·2 answers
  • I dont know the answer
    6·1 answer
  • How can 1% of 600 be used to determine 36% of 600? Enter your answers in the boxes to correctly complete the statement.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!