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
lana [24]
3 years ago
9

NEED HELP!!!!!!!!!!!!!!!

Mathematics
2 answers:
madreJ [45]3 years ago
6 0

Answer:

Option D. -(4x-3)(5x-2)

Step-by-step explanation:

we have

f(x)=-20x^{2}+23x-6

Equate the function to zero

-20x^{2}+23x-6=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

-20x^{2}+23x=6

Factor the leading coefficient

-20(x^{2}-(23/20)x)=6

Complete the square. Remember to balance the equation by adding the same constants to each side

-20(x^{2}-(23/20)x+(529/1,600))=6-(529/80)

-20(x^{2}-(23/20)x+(529/1,600))=-(49/80)

(x^{2}-(23/20)x+(529/1,600))=(49/1,600)

Rewrite as perfect squares

(x-(23/40))^{2}=(49/1,600)

(x-(23/40))=(+/-)(7/40)

x=(23/40)(+/-)(7/40)

x=(23/40)(+)(7/40)=30/40=3/4

x=(23/40)(-)(7/40)=16/40=2/5

therefore

-20x^{2}+23x-6=-20(x-(3/4))(x-(2/5))

-20x^{2}+23x-6=-(5)(4)(x-(3/4))(x-(2/5))

-20x^{2}+23x-6=-(4x-3)(5x-2)

musickatia [10]3 years ago
3 0
It's D, it's the only one where it has a -6 at the end other than A, but if you look at the A when distributed there isn't a 23x<span />
You might be interested in
A boat rental company has two kinds of boats, rowboats and motorboats. The expressions below represent the cost,
malfutka [58]

Answer:

  • B. 9x + 22

Step-by-step explanation:

<u>You need to find the difference:</u>

  • 17.50x + 25 - (8.50x + 3) =
  • 17.50x - 8.50x + 25 - 3 =
  • 9x + 22

Correct one is B

5 0
3 years ago
Read 2 more answers
Find f(g(x)) simplify completely f(x)= x^2+5x+2 g(x)=3x
Sindrei [870]

Answer:

<u>f(g(x)) = 9x² + 15x + 2</u>

Step-by-step explanation:

  • f(x) = x² + 5x + 2
  • g(x) = 3x

<u>Solving f(g(x))</u>

  • f(g(x))
  • f(3x)
  • f(3x) = (3x)² + 5(3x) + 2
  • f(3x) = 9x² + 15x + 2
  • <u>f(g(x)) = 9x² + 15x + 2</u>
8 0
1 year ago
Read 2 more answers
Ana took out a $600 loan from the bank. At the end of 5 years, she pays back $60 in interest. What was the interest rate?
Usimov [2.4K]

Answer:

Ana payed a 10% interest rate.

7 0
3 years ago
Help pls i don't know where to put the pharenteses this is the equation
Brut [27]

Answer:

{15 - {(25 x 2.4) + 7}}- (3 x 2) = -16

Step-by-step explanation:

15 - 25 x 2.4 + 7 - 3 x 2= -16 is the given equation.

Now by the rule of BODMAS:

here B = Bracket, O means Of,  D means Divide, M means Multiplication , A means Addition and S means Subtraction.

So, according to this order start putting brackets.

first operation is multiplication, second is addition and then subtraction.

⇒  15 - 25 x 2.4 + 7 - 3 x 2  = {15 - {(25 x 2.4) + 7}}- (3 x 2)

Hence, {15 - {(25 x 2.4) + 7}}- (3 x 2) = -16

8 0
3 years ago
145 in the ratio 18:11
Dmitrij [34]

Answer:

90:55

Step-by-step explanation:

18 + 11 = 29

145/29 = 5

5 x 18 = 90

5 x 11 = 55

5 0
3 years ago
Other questions:
  • HELP WILL GIVE BRAINLIEST!!Aditi has $50.00 in her wallet. She buys a shirt for $12.00 and also wants to buy some bracelets that
    13·2 answers
  • What is the slope of the line graphed on the coordinate plane?
    15·2 answers
  • Write the following equation in the general form Ax + By + C = 0. <br> 2x + y = 6
    8·1 answer
  • Tony buys 4kg of potatoes at £1.60 per kilogram and 2kg of onions at £1.80 per kilogram.
    7·2 answers
  • (2-2) slope intercept form
    9·1 answer
  • 5^-2x times 5^x+2 = 5^-2x
    6·1 answer
  • What is four times four need help
    15·2 answers
  • 8 numbers have a sum of 90. Whats the average number?
    15·1 answer
  • PLEASE HELP!!!!!! ILL GIVE BRAINLIEST *EXTRA 40 POINTS** !! DONT SKIP :((
    13·2 answers
  • (sec^2 - 1) (cse^2 -1) Show work please
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!