Solve the quadratic equation numerically (using tables of x- and y- values). X squared + 7 x + 12 = 0.

Answers

Answer 1

The quadratic equation numerically for [tex]x^{2} + 7x +12 = 0[/tex] is when

x = -4 and x =-3

The equation is  [tex]x^{2} + 7x +12 = 0[/tex]

To solve this equation using the table, we change the equation into a function

So, the function is F(x) = y = [tex]x^{2} + 7x + 12[/tex]

We have to find the value of x which we can substitute to the equation to get the y value to become 0. Since it is a quadratic equation, x will have 2 values, on [tex]x^{2}[/tex] & 7x

X         [tex]x^{2} + 7x + 12[/tex]  = Y

-4     = [tex]-4^{2}[/tex] +7(-4) + 12 = 0

-3     = [tex]-3^{2}[/tex] +7(-3) + 12 = 0

-2     = [tex]-2^{2}[/tex] +7(-2) + 12 = 2

-1     = [tex]-1^{2}[/tex] +7(-1) + 12  = 6

0     =   [tex]0^{2}[/tex] +7(0) + 12  = 12

1     =   [tex]1^{2}[/tex] +7(1) + 12   = 20

2                 =   [tex]2^{2}[/tex] +7(2) + 12  = 30

Based on table above we can see Y = 0, when X = -4 and X = -3

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Related Questions

1.45x + 1.25y =70.85

x + y = 53

Answers

Answer:

Your answer is

y= 30

x= 23

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Step-by-step explanation:

Convert the following fraction to a decimal.
23/99

Answers

Answer:

23/99 as a decimal is 0.23232323232323.

Step-by-step explanation:

In fractions, the numerator is the number above the line and the denominator is the number below.

The line in a fraction that separates the numerator and the denominator represents division.

To convert a fraction to a decimal, divide the numerator by the denominator.

What is the equation of this trend line? Enter answers by filling in the box

Answers

Answer:

N= 110 M+ 55?

I'm just trying my best to help you

In 2010, the population of a city was 180,000. From 2010 to 2015, the population grew by 7%. From 2015 to 2020, it fell by 4%. How much did the population grow from 2010 to 2015, to the nearest 100 people?

Answers

Answer:

The population grew by 12600 people.

Step-by-step explanation:

In 2010, the population of a city was 180,000. From 2010 to 2015, the population grew by 7%. From 2015 to 2020, it fell by 6%. How much did the population grow from 2010 to 2015, to the nearest 100 people?

The population grow from 2010 to 2015 is 12600

What is Percentage?

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

Total population in 2010 = 180000

From 2010 to 2015, the population grew by 7%.

Then, the population grew from 2010 - 2015

= 7% of 180000

= 7/100 x 180000

= 7 x 1800

= 12600

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Whoever get this right, gets a free hamster

Answers

Answer:

it's C

Step-by-step explanation:

pink or purple hamster plz :D

omg paint strips, that's the way to go

Hi please I need answer.I will make brainliest who can answer this.Thank youuu​

Answers

9514 1404 393

Answer:

  (0, 0) 2, 4, 5

  (-1, -1) 1, 2, 4, 5

  (2, -1) 1, 2, 4, 5

  (-2, 2) 2, 4

Step-by-step explanation:

The graph shows the solution sets of the inequalities. Each inequality is graphed in a different color to aid identification of the solution areas.

The purple area, x + 3y ≥ 6, does not contain any of the given points.

The inequalities satisfied by the given points are listed above.

Mr. Evans rides his bicycle an average speed of 8 km/hr. How far has he
traveled if he rides 4 hours?​

Answers

Multiply 8km/h by 4h. You will get 32 km

If ADEF = AJKL, DE = 18, EF = 23, DF = 9x - 23, JL = 7x-11, and JK = 3y - 21, find the
values of x and y.

Answers

Answer:

x = 6

y = 13

Step-by-step explanation:

since DE and JK are congruent, they are both 18

to find 'y':

3y - 21 = 18

3y = 39

y = 13

DF and JL are diagonals that are congruent so:

9x - 23 = 7x - 11

2x = 12

x = 6

X=6 Y=13 values of x and y

There is some tea in three teapots. | Teapot A Teapot B Teapot C 420 ml 490 ml 707 ml What is the simplest ratio of tea in teapot A to B to C? Your answer should be in the form 420:490:707.​

Answers

Answer:

esa es la abc de jaja XD nose porque digo esto solo quiero puntos ._.XD

6:7:10.1 I just divided them all by 70

Help me please!! An emergency!!

A polynomial equation with rational coefficients has the roots 5, sqrt6, 3, -sqrt7. Find two additional roots.

Thank you!

Answers

Given:

A polynomial equation with rational coefficients has the roots   [tex]5, \sqrt{6}, 3, -\sqrt{7}[/tex].

To find:

The two additional roots.

Solution:

According to the irrational root theorem, if [tex]a+\sqrt{b}[/tex] is a root of a polynomial, then [tex]a-\sqrt{b}[/tex] is also the root of that polynomial.

It is given that, [tex]\sqrt{6}\text{ and }-\sqrt{7}[/tex] are roots of a polynomial.

By using irrational root theorem, [tex]-\sqrt{6}\text{ and }\sqrt{7}[/tex] are also the roots of that polynomial.

Therefore, the two additional roots are [tex]-\sqrt{6}\text{ and }\sqrt{7}[/tex].

Which terms can be combined in the expression below? Select three options.


PLEASE HELP 50 POINTS
StartFraction 5 over 6 EndFraction a minus 2 b minus 16.3 + StartFraction b over 12 EndFraction + c minus 0.9 b
StartFraction 5 over 6 EndFraction a
–2b
–16.3
StartFraction b over 12 EndFraction
–0.9b

Answers

Answer:

This doesnt make sense

Step-by-step explanation:

72 paper clips to 63 paper clips

Answers

Answer:

72-63=9

9/72=13%

13% IS .13 SO TENTH IS .1

I AM NOT SURE ABOUT THE TENTH

Step-by-step explanation:

Construct quadrilateral with the measurements given below:
Quadrilateral ABCD with AB = 4.5 cm, BC = 5.5 cm, CD = 4 cm, AD = 6 cm
and AC = 7 cm​

Answers

Answer:

Cevap A şkkı

İyi dersler

PLS HELP QUICK!!
Simplify. 5^-1 (3^-2)
a. 45
b. 1/45
c. 15^-3
d. 15^2

Answers

Answer:

option B: 1/45

Step-by-step explanation:

option B isthe correct answer of this question.

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Step-by-step explanation:

hope this will help you.

A school custodian discovered a leak in a water pipe. The custodian found that 2,432 fluid ounces of water had leaked out. How many gallons of water is​ this? Use the conversion factor 1 gallon 128 fluid ounces.

Answers

Answer: 19 gallons

Step-by-step explanation:

Conversion factor is 1 gallon is to 128 fluid ounces.

If 2,432 fluid ounces leaked out, to find out the amount of gallons this was, you need to divide the fluid ounces by the number of fluid ounces in a gallon. This is what is done when moving from a smaller unit to a larger one.

= 2,432 / 128

= 19 gallons

Write 7,062.01 in expanded form

Answers

7000+60+2+.01=7062.01

Answer the photo below thanks

Answers

Answer:

6x60=360

Step-by-step explanation:

60

URGENTTT PLEASE HEEEEELP​

Answers

Answer:

1)

M: 15

T: 14

W: 19

Th: 20

F: 9

Sa: 9

Su: 5

2) 18 degrees

Step-by-step explanation:

will give brainliest-need asap- real answers only or you will be reported

Answers

Answer:

33

Step-by-step explanation:

The greatest common factor is 3 and the least common multiple is 30.

30 + 3 = 33

Answer: C

Step-by-step explanation: 30

help today hi have to finish this and I have like 21 more assignments to go

Answers

Answer:

Characteristics? I don't know

Step-by-step explanation:

Answer:

I'm answering so you can give him brainliest!

Step-by-step explanation:

Find x and y

(45-45-90 formula)

(It’s not 5.6 for x and y I got that wrong)

I’ll mark as brainliest!!

Answers

Answer:

x = y = 4[tex]\sqrt{2}[/tex]

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos45° = [tex]\frac{\sqrt{2} }{2}[/tex]  , then

cos45° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{x}{8}[/tex] ( multiply both sides by 8 )

8 × cos45° = x , then

x = 8 × [tex]\frac{\sqrt{2} }{2}[/tex] = 4[tex]\sqrt{2}[/tex]

The third angle in the triangle = 45° ( sum of angles in triangle )

Then the triangle is isosceles with congruent legs, thus

x = y = 4[tex]\sqrt{2}[/tex]

(2a^(3)-a^(2)b)/(36b^(2))-:(2a-b)/(9b^(2))


Domain?

Answers

-3a3b - 40a2b2 + 8a2 - 30ab3 - 28ab - 36b2

                     4    

i looked it up

can someone help me pleaseee :)

u have to make the questions become y = mx + b

Answers

Answer:

3. 8y= -7x -12

4. -3y= 4x -12

5. 7y= -2x +4

Do you want me to do the rest?

did you got it??

The rest are:

6. -3y =6x +12

7. -10y= 5x+20

8. 4y=2x +12

3/4x+3-6/2x-1 algebric fractions

Answers

Answer:

-9x-8/4

Step-by-step explanation:

The answer would be -9/4x+2

Hope this helps

Have a great day/night

Feel free to ask any questions

best answer will get brainlist

Answers

Answer: 482x-4y%742

Step-by-step explanation: if you put the compexules and then you suntract then times the sublactus

can u guys plzzzzzzzzzzzz help

Answers

Answer: p =2

Step-by-step explanation: Look at how many people I helped, trust me

Find a coterminal angle to 626 degrees

Answers

Answer:

266

Step-by-step explanation:

Which expression is equivalent to (1/16)^-4

Answers

Answer: =65536

Step-by-step explanation: hope this help

Answer: There are a few but: (-16)^4 is my first anwser.

Step-by-step explanation:

If you have a negative number in the parathesis you'll usually make it 1 over the number in this case 1/16 can be written as -16. That way the negative 4 can become positive four once you change the 1/16 to -16.

I hope that makes sense.

In a pet store,the ratio of dogs to cats is 3 to 2. if there are 15 dogs, how many cats are there at the pet store? NEED HELP ASAP

Answers

Answer:

10 cats

Step-by-step explanation:

dogs:cats = 3:2=15:x

3x=15.2

3x=30

x=10 cats

since the ratio is 3:2, you can set up your equation like 3/2 = 15/x. then cross multiply and that will get you 30 = 3x and x will equal 10. this means that there are 10 cats and 15 dogs. hope that helps!



You rent a canoe for $4.50 per hour. Your cost before the tax is added is $18. Write an equation to find the number of hours H that you retend the canoe

Answers

Answer:

total cost = cost/hour x hours

$18.00 = ($4.50)(X hours)

X=4 hours

Step-by-step explanation:

total cost = cost/hour x hours

$18.00 / 4.50=4 hours

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