solve (x - 3)^2 = 81 quadratic equation ​

Answers

Answer 1

Answer:

x=12

Step-by-step:

Square root both sides to get

x-3=9

Then take 3 to the other side

x=9+3

x=12

Answer 2
Your answer should be X=12,-6

Related Questions

16. What is the length of minor arc CD?
42
A
d = 30 ft
A: 7.91 feet
B: 8.32 feet
C: 10.99 feet
D: 11.89 feet

Answers

Your answer will be C

Pleas help me fast!

Answers

Answer:

35

Step-by-step explanation:

17-7+5^2  Divide 28 by 4

17-7+25  5 to the power 2 is 25

10+25     add 25 and 10 and you get 35.

35

Answer:

35

Step-by-step explanation:

Find the zeros for each function
1. f(x)= x^3 + 12x^2 + 21x + 10

2. f(x) = x^4 + x^3 - 11x^2 - 9x + 18

Answers

9514 1404 393

Answer:

zeros are -10, and -1 (multiplicity 2)zeros are {-3, -2, 1, 3}

Step-by-step explanation:

For higher-degree polynomials I find it extremely useful to use a graphing calculator to find the zeros.

The usual approaches are ...

use the rational root theoremtry values of x=±1narrow the search using Descartes' rule of signsestimate maximum or minimum root values

__

1. Rational roots will be factors of 10, so ±1, ±2, ±5, or ±10. The signs are all positive, so there are no positive real roots. The sum of odd-degree coefficients is the same as the sum of even-degree coefficients, so -1 is one of the roots. Removing that using synthetic division gives you ...

   f(x) = (x +1)(x^2 +11 +10)

The quadratic (more or less obviously) factors as (x+1)(x+10), so the complete factorization is ...

  f(x) = (x +1)^2(x +10)

and the zeros are {-10, -1, -1}.

__

2. Rational roots will be factors of 18, so will be ±1, ±2, ±3, ±6, ±9, ±18. The sum of coefficients is 0, so x=1 is a root. The rule of signs tells you that there are 2 positive real roots, so there is one more positive real root. Synthetic division tells you the factoring so far is ...

  f(x) = (x -1)(x^3 +2x^2 -9x -18)

We note that the first two coefficients have the same ratio as the last two, so we can factor by grouping.

  x^3 +2x^2 -9x -18 = x^2(x +2) -9(x +2) = (x^2 -9)(x +2)

Factoring the difference of squares gives you the complete factorization, hence all of the roots. (The zeros are the values of x that make the factors zero.)

  f(x) = (x -1)(x +2)(x -3)(x +3)

The zeros are {-3, -2, 1, 3}.

A line has slope −1. It passes through the point Q(2, −n) and R(4, −3). What is the value of n?

Answers

i believe the answer is -1

what is the slope of the line shown?

Answers

Answer: We can't answer Because we cannot see it

Step-by-step explanation:

Answer:

fdfbfff

Step-by-step explanation:

(Please help)..........................

Answers

Answer:

the first one is correct

In the figure,ABC~ DEF. solve for x

Answers

Answer:

B) X = 6

Step-by-step explanation:

The figure transformation is a dilation. And the side lengths increased by two.

if Ladarius jogs 24 km in 3 hours, how many km can he jog in 5 hours?

Answers

Answer:

40 km per hour

Step-by-step explanation:

24 km divide by 3= 8 km per hour.

8km x 5 hours= 40 km in 5 hours

Perform the indicated operation:
NEED HELP PLEASE

Answers

Answer:

the 3rd one..........??

Answer both questions pls for more points :)

Answers

Answer...

1st is A

2nd is C

Find the slope of the line graphed below.

Answers

Answer: 3/2
You use rise/run, so you go up by 3 and to the right by 2.

Answer:

3/2

Step-by-step explanation:

rise over run--->3 up and 2 right, 3/2 is the slope

What is the value of x?

Answers

Answer:

5

Step-by-step explanation:

6x+12 = 9x-3

3x = 15

x= 5

PLEASE HELLPPP MEEEE WITHH MATHHH

Answers

Answer:

-1/2y+1/2x

Step-by-step explanation:

What fraction of state legislatures must approve an amendment before it becomes law​

Answers

Answer:

3/4.

Step-by-step explanation:

The process of amendments to the Constitution of the United States is established and specified in Article V of said regulation. This process can be initiated by Congress or by the state legislatures, and once the amendment is approved by them, the legislatures of at least 3 out of 4 states (75% of the total) must ratify the amendment so that it becomes operative and is inserted into the constitutional text.

8-4x for x = 9
The expression equals I

Answers

Answer:

- 28

Step-by-step explanation:

Step 1:

8 - 4x        Equation

Step 2:

8 - 4 ( 9 )     Input x value

Step 3:

8 - 36        Multiply

Answer:

- 28          Subtract

Hope This Helps :)

-28..............................

x divided by 39 = 1204 R38

Answers

Answer:

x=46994

Step-by-step explanation:

Just do 1204 38/39 * 39 to get x=46994

x=46994
hope this helps ! :)

9 correct : 15 questions = 45 correct: q questions
please help me ​

Answers

Answer: it should be 75

Step-by-step explanation:

9 times 5 is 45 so 15 times 5 should be 75

What is the population density of 13 lillies living in an area of 6 meters (length) and 4 meters (width)?

Answers

Answer:

0.54 lillies per square meter.

Step-by-step explanation:

First we calculate the area:

Area = length * width

Area = 6 m * 4 m = 24 m²

The we divide the population of lillies (13) by the area, to calculate the population density:

13 lillies / 24 m² = 0.54 lillies/m²

So the population density is 0.54 lillies per square meter.

There are 7 socks in a bag. 2 of those socks are blue.
What is the probability of picking a blue sock randomly from the bag

Answers

Answer:

2/7 or about 28% depending on what type of answer your teacher is looking for

What is the original price of the box of cereal?

Answers

Answer:

$3.20

Step-by-step explanation:

9965 divided by 19.9 estimate

Answers

Answer: 500.7

500.75 = 500.7

Step-by-step explanation:

The estimated value is 500

What is estimation?

Estimating in math is a way of approximately calculating an answer (getting a 'rough answer') or to check its accuracy (the 'right answer').

Given that, 9965 divided by 19.9 estimate

Let 9965 ≈ 9970

19.9 ≈ 20

9970 ÷ 20

9970 / 20

= 498.5

≈ 500

Hence, the estimated value is 500.

Learn more about estimation, click;

https://brainly.com/question/17961193

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Can anyone solve this? If so tell me and make sure u know what ur doing please

Answers

Answer:

-2

Step-by-step explanation:

To find the slope of a line, you need to find the [tex]\frac{rise}{run}[/tex] between two points. I will be using the points (-3, 2) and (-1, -2).

[tex]\frac{rise}{run}[/tex] = [tex]\frac{-2-2}{-1-(-3)}[/tex]

     = [tex]\frac{-2-2}{-1+3}[/tex]

     = [tex]\frac{-4}{2}[/tex]

     = -2

Select all the expressions that are equal to 420.
(40 x 1) + (2 x 10)
30 x 10 x 4
20 x 20 x 1
21 x 20
30 x 14

Answers

21•20
30•14
the last 2!

solve for x.

x/2.5<10​

Answers

Answer:

x < 25

Step-by-step explanation:

x/2.5 < 10

you need to get x alone so you multiply both sides by 2.5 to get the 2.5 crossed out on one side

x < 2.5 times 10

What quadrant is the point (-3, -3) in

Answers

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

brainliest pls

You buy 2,000 shares of stock for $25.43 and sell them for $44.10 per share. What
percent is your capital gain?

Answers

i hope this picture helps you!

Select the correct answer. If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system?
OA The lines in a system cannot be parallel.
OB There is no solution. OC There is exactly one solution.
OD There are infinitely many solutions.​

Answers

Answer:

a

Step-by-step explanation:

Answer:

B: There is no solution

Step-by-step explanation

The lines are parallel so there is no way the lines can cross and have a solution so there's no solution

Use the Distributive Property to write without parentheses:
4\left(3-2m\right)4(3−2m)

Answers

Answer:  12 - 8m  If there is supposed to be a sign between the rwo expressions, that will change.

If its multiplication it would be 144 - 192m + 4m²  

Step-by-step explanation:

HELP! WILL GIVE BRANLIEST!
(Question 12)

Answers

Ima go with 100 mill

Answer:

the first one I believe to be answer D, hope this helps

PLS HELP WILL GIVE BRAINLIEST
How can parents that dont have a O blood type still have a O blood type baby???

Answers

Answer: While a child could have the same blood type as one of his/her parents, it doesn’t always happen that way.

Step-by-step explanation:

For example, parents with AB and O blood types can either have children with blood type A or blood type B. These two types are definitely different than parents’ blood types!

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