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
CaHeK987 [17]
3 years ago
15

Need help solving using the quadratic formula

Mathematics
1 answer:
Oxana [17]3 years ago
8 0
If this is a answer x=8
You might be interested in
What form is this equation in? y + 6 = (1/2)(x - 4)
maks197457 [2]
Y +6 =(1/2)(x+4)

y +6 = 1/2 x +2
y=1/2 x - 4

or 1/2 x -y = 4 
7 0
3 years ago
Read 2 more answers
When 5 is subtracted from the square of a number, the result is 4 times the number. Find the negative solution.
Roman55 [17]

Answer:

x = -1

Step-by-step explanation:

First, we can translate this statement to the equation

x^2-5=4x

Subtracting 4x from both sides gives us a quadratic equation:

x^2-4x-5=0

From here, we can factor the expression on the right to give us the equation's two solutions. The factored form will look like

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

We need a + b = -4 and ab = -5, and picking a = 1 and b = -5 do the job there. Our expression factors then to (x + 1)(x - 5), giving us the equation

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

And the solutions x = -1 and x = 5. Since we're only looking for the negative solution, x = -1 is the one we want.

3 0
3 years ago
Decompose -6x/(x+2)(x+8) into partial fractions.
kari74 [83]

The partial fraction expansion takes the form

-6<em>x</em>/((<em>x</em> + 2) (<em>x</em> + 8)) = <em>a</em>/(<em>x</em> + 2) + <em>b</em>/(<em>x</em> + 8)

Both factors in the denominator are linear, so the numerators in the corresponding partial fractions have degree 1 - 1 = 0 and are thus constants.

Combine the fractions on the right side into one with a common denominator, then set the numerators on both sides of the equation equal to each other:

-6<em>x</em> = <em>a</em> (<em>x</em> + 8) + <em>b</em> (<em>x</em> + 2)

Expand the right side and collect terms by powers of <em>x</em> :

-6<em>x</em> = (<em>a</em> + <em>b</em>) <em>x</em> + (8<em>a</em> + 2<em>b</em>)

It follows that

<em>a</em> + <em>b</em> = -6   and   8<em>a</em> + 2<em>b</em> = 0

==>   <em>a</em> = -2   and   <em>b</em> = 8

So we end up with

-6<em>x</em>/((<em>x</em> + 2) (<em>x</em> + 8)) = -2/(<em>x</em> + 2) + 8/(<em>x</em> + 8)

8 0
3 years ago
Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. wh
Elenna [48]

The other possibilities include that she chooses at least one book that is not a mystery; this means the complement is not choosing all mysteries.

<h3>What is the probability?</h3>

Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.

The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.

P(E) = Number of favorable outcomes / total number of outcomes

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels.

The complement of an event is the remaining possibilities.

Our event is Mariah choosing 3 mysteries.

The other possibilities include that she chooses at least one book that is not a mystery; this means the complement is not choosing all mysteries.

Learn more about probability here;

brainly.com/question/11234923

4 0
2 years ago
Read 2 more answers
Leroy is packing 53 muffins for a bake sale. He puts 8 muffins in each package. How many muffins will be left over?
Cloud [144]

Answer:

We can put fill 6 packages and that gives 48 muffins so there will be 5 muffins left over

Hope this helps and brainliest please

7 0
3 years ago
Other questions:
  • Write two ratios that are equivalent to 9/12​
    9·2 answers
  • You roll a pair of fair six-sided dice. The sample space of 36 possible outcomes is shown below. Based on this information, answ
    15·1 answer
  • Which expression gives the distance between the points (4,6)and (7,-3)
    12·1 answer
  • Which of the following are among the five basic postulates of euclidean geometry
    7·1 answer
  • PLEASSSSSSSSEE HELP GIVING OUT BRAINLIEST
    8·2 answers
  • How do you figure probability
    14·1 answer
  • WILL MARK BRAINLIST
    13·1 answer
  • Im begging you PLS answer my questions
    6·1 answer
  • Students at Mendel Middle School are planning a fair for their school's fundraiser. Liam volunteers to help plan the event. The
    14·1 answer
  • PLEASEEE HELP<br> Questions 4 and 5
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!