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
lawyer [7]
3 years ago
7

X2 – 7x + 6 = -8 solve using factoring

Mathematics
1 answer:
murzikaleks [220]3 years ago
7 0

Answer:

Step-by-step explanation:

Rewrite this in standard quadratic equation form:  x^2 - 7x +  6 + 8 = 0, or x^2 - 7x + 14 = 0.  This does not factor easily, so I will use the quadratic formula to find the roots and then write out the factors based upon the roots:

The discriminant is b^2 - 4ac, which here is (-7)^2 - 4(1)(14) = -7.

Because the discriminant is negative, we know that there are two unequal, complex roots.  They are:

      -(-7) ± i√7         7 ± i√7

x = ----------------- = ---------------

              2                     2

One factor is (x - [1/2]{7 ± √7}  )

You might be interested in
A serving of raisin bread has 3 grams of fat and 150 calories. What percent of calories are from fat? Remember, there are 9 calo
Sergio039 [100]
Well, that means there are 3*9=27 cals from fat. 27/150=18% of calories.
8 0
4 years ago
What is the solution of the equation x2 − 12x = 8?
Tanya [424]

Answer:

x = 12.63        or         x= -0.63

Step-by-step explanation:

<em>From my understanding the question is x² - 12x = 8</em>

<em>This will be solved through a quadratic equation formula.</em>

<em>Step 1: Form a quadratic equation</em>

x² - 12x = 8

x² - 12x - 8 = 0

<em>Step 2: Apply the quadratic formula</em>

a = 1, b = -12, c = -8

x = <u>-b±√b²-4ac</u>

          2a

x = <u>-(-12)±√(-12)²-4(1)(-8)</u>

                 2(1)

<em>Step 3: Find the value of x</em>

x = <u>12±4√(11</u>

           2

x = <u>12+4√(11)</u>                  or            x =  <u>12-4√(11)</u>

            2                                                  2

x = 12.63                         or            x= -0.63

!!

6 0
3 years ago
Luiza João tem juntos R$123 se Luiz tivesse a mais metade da quantia que tem mais um real teria dobro de João quanto tem cada um
olga nikolaevna [1]

Answer:

A=25

B=98

Step-by-step explanation:

You can see it as a 2-eq system.

Call A Joao's money and B Luiz's money. The sum is $123:

A + B = 123

As the half of Luiz's money + 1 is the double of Joao's money, we could represent this as:

(B/2) + 1 = 2A [this is what the last sentence says]

We can get the A value by dividing both sides by 2:

[(B/2) + 1]/2 = 2A / 2

B/4 + 1/2 = A

Then, replacing this A value on our first equation:

B/4 + 1/2 + B = 123

B/4 + 4B/4 = 123 - 1/2

(5/4)B = 122.5

Multiplying by (4/5) [or dividing by 5/4] to eliminate this 5/4:

(5/4) B * (4/5) = 122.5(4/5)

B = 98

Then we find A:

A = B/4 + 1/2 = 24.5 + 0.5 = 25

A=25

5 0
4 years ago
GEOMETRY Please help me!!!!
Tom [10]

Answer:

The correct answer is first option

512 cubic mm

Step-by-step explanation:

<u>Points to remember</u>

Volume of hexagonal pyramid = Base area * height

<u>To find the volume of hexagonal pyramid</u>

It is given that, base area = 64 square mm and

height = 8 mm

Volume = Base area * Height

 = 64 * 8

 = 512 cubic mm

Therefore the correct answer is first option

512 cubic mm

6 0
4 years ago
Why is 97 the answer
Kazeer [188]
It could also be 31!
7 0
3 years ago
Read 2 more answers
Other questions:
  • Reuben bought 3 CDs that were each the same price. Including sales tax, he paid a total of $46.50 . Each CD had a tax of $1.30 .
    6·1 answer
  • Colin scored 16 and Brian scored 63 more than Colin.What was their combined score?
    14·2 answers
  • There are 7 more runners than walkers. If there are 11 walkers, how many runners are there?​
    10·1 answer
  • Evaluate the following expression. 70
    8·2 answers
  • Please Evaluate <br> 9[y^3(z-6)-5] for y=2 and z=8
    14·2 answers
  • I WILL MARK BRAINLIEST ASAP PLEASE HELP!
    5·1 answer
  • Help please if you can thanks
    11·2 answers
  • Imagine we paint a 4x4x4 cube blue on every side.how many of the small cubes have 3 blue faces? How many have 2 blue faces? How
    8·1 answer
  • Find the sum of <br> 2x^2- 8x– 6 and 9x^2-8
    6·2 answers
  • The following data depicts the relationship between the Amount spent on insurance and the amount of inventory loss.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!