solve by factoring x^2 -9 =0​

Answers

Answer 1
x = 3 and -3

X^2 - 9 = 0
(X+3)(X-3) = 0

X + 3 = 0
X = -3

X - 3 = 0
X = 3

Related Questions

Your friend has $100 when he goes to the fair.he spends $10 to enter the fair and $20 on food.rides at the fair cost $2 per ride.which function can be used to determine how much money he has left over after x rides

Answers

Answer:

The answer is A f(x)=-2x + 70

Step-by-step explanation:

#1: Solve the linear system below using the elimination method. Type your
answer as an ordered pair in the form (#,#).*
5x + 3y = 1
-5x – 7y = 31

Answers

The given linear system is:

[tex]\displaystyle \left \{ {{5x+3y=1} \atop {-5x-7y=31}} \right.[/tex]

Linear systems can be solved using either elimination or substitution. However, the question is asking to solve using elimination, so I will use that method.

When eliminating, you can either eliminate x or y. In this system, x is much easier to eliminate. The x variable in the first equation is 5x, and in the second equation, it is -5x. Since 5 and -5 cancel each other out, you don't need to do anything other than add.

[tex]5x+3y=1\\-5x-7y=31[/tex]

[tex]\displaystyle 3y-7y=1+31\\-4y=32[/tex]

Lastly, you need to leave the variable y alone. The variable is currently -4y or -4 times y. To remove it, you need to do the opposite of it, which is dividing by -4.

Divide both sides by -4:

[tex]\displaystyle\frac{-4y}{-4} =\frac{32}{-4}[/tex]

[tex]\displaystyle y=-8[/tex]

Now that you have the value of y, substitute it into one of the equations to find x. I will be substituting it into the first equation.

[tex]\displaystyle 5x+3y=1 \rightarrow 5x+3(-8)=1[/tex]

Open the parentheses and multiply:

[tex]5x-24=1[/tex]

Move 24 to the other side to leave the variable alone:

[tex]5x-24+24=1+24[/tex]

You will be adding since you're "removing" it by doing the opposite of it.

[tex]5x=25[/tex]

Lastly, divide both sides by 5 to leave x alone.

[tex]\displaystyle \frac{5x}{5} =\frac{25}{5}[/tex]

[tex]x=5[/tex]

[tex]\displaystyle (x,y) \rightarrow (5, -8)[/tex]

The answer is (5, -8).

The table below shows the total cost for purchasing a certain number of equally-priced concert tickets.
Total cost (in dollars) Number of concert tickets
110110110 222
275275275 555
440440440 888
Write an equation to describe the relationship between ttt, the number of tickets, and ccc, the total cost of tickets.

Answers

Answer:

c=55t

Step-by-step explanation:

..

Find the midpoint of the segment with the following endpoints.
(6, 4)(9,9)

Answers

7.5, 6.5 also try searching midpoint formula with what u have it’s pretty basic math

Which is the correct decimal representation of 13/40

Answers

Answer:

.325

Step-by-step explanation:

Answer:

0.325 is a decimal

Step-by-step explanation:

Which expression is represented by the diagram?

10 negative tiles. 4 are crossed out.

Answers

Answer:

6 tiles

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

I took the test ;)

CAN U GUYS HELP ME WITH THIS?!! 11 POINTS AND BRAINLY PLEASEEEE!!!????

Answers

Answer: X=-6

Step-by-step explanation:

Answer:

B. -6

Step-by-step explanation:

which point satisfies the system of equations y = 3x - 2 and y = -2x + 3
1. A
2. B
3. C
4. D

Answers

Answer:

D

Step-by-step explanation:

Is 152 points in 8 games
171 points in 9 games equivalent

Answers

Answer:

Yes, they are equivalent.

Hi I need help can you guys look at the screenshots thanks if the answer is correct I will give Brainliest if the answer is correct.

Answers

Answer:

D. -60 + (-30) = -30

Step-by-step explanation:

Put the word problem into an equation: -60 + (-30) = -30

I hope this helped, please mark Brainliest, thank you so much!!

The answer is C= -60+30=-30

g(x)=f(x-1)-5

Describe the transformation to f(x) that results in g(x).

1

2

f(x) has been

translated to the left

one and down five.

f(x) has been

translated to the

right one and down

five.

f(x) has been

translated to the

right one and up five.

f(x) has been

translated to the left

one and up five.

Answers

Answer:

f(x) has been  translated to the  right one and down  five.

Step-by-step explanation:

Given

[tex]g(x)=f(x-1)-5[/tex]

Required

Determine the transformation

Taking the analysis one at a time

The relationship between f(x) and f(x - h) is that f(x) is translated h units to the right

So, when f(x) becomes f(x-1), it is as a result of f(x) being translated 1 unit to the right

The relationship between f(x) and f(x) - h is that f(x) is translated h units downwards

So, when f(x - 1) becomes f(x - 1) - 5, it is as a result of f(x - 1) being translated 5 units downwards.

Hence, option 2 answers the question

Q1)Complete the table of values of y=6/x

Q2)Which of A,B or C is the correct curve for y=6/x


I will give brainliest!!! Help pleaze​

Answers

Answer:

Q1) 12, 2, 1.5, 1

Q2) I believe its C

Step-by-step explanation:

Hope it helps!

Answer:

1st question 12, 2, 1.5, 1

2nd question C

Step-by-step explanation:

Hope I helped

5-3(2x-7)=2(7-3x)
What is true for the equation x=0, x=28, the equation has no solution or the equation has infinitely many solutions

Answers

Step-by-step explanation:

Part 1: 4x + 7 = 3(2x - 5)4x+7=3(2x−5)

4x+7=6x-154x+7=6x−15

7=6x-15-4x7=6x−15−4x

7=2x-157=2x−15

7+15=2x7+15=2x

22=2x22=2x

22=2x / 222=2x/2

x=11x=11

Part 2: Sam is not correct because he messed up the second step. He added 2x on both sides to get 7x, instead he should have subtracted.

PLEASE HELP WITH GEOMETRY

Answers

Answer:

acute triangle

Step-by-step explanation:If the square of the length of the longest side of a triangle is less than the sum of the squares of the lengths of the other two sides, then the triangle is an acute triangle.

I have been asking and asking for help and not one hleped me all they did was troll and say dumb stuff that has nothing to do with the question plss hlep me I can't do this

Answers

Answer:

Try 120

Step-by-step explanation:

There are five dashes in between 100 and 200. Count up by 20s

What is the 100th term of the sequence with a1 = 222 and d = -5

Answers

Answer:

-273

Step-by-step explanation:

222- (99*5)

222-495

-273

Answer:

-273

(next time if their is options maybe also try and put them, it would help a lot)

GEW has angle measures given by m<=5x+6 m<=3x and m

Answers

Answer:

(D) 24°

Step-by-step explanation:

(5x + 6)° + (3x)° + (142 - 4x)° = 180°

5x + 6 + 3x + 142 - 4x = 180

4x + 148 = 180

4x = 32

x° = 8°

m∠E = 3×8° = 24°

Estimate 7 x 522 ns

Answers

3.866 microseconds? 7 x 522 nano seconds = 3.86600 ms

3.86400 hope that helped

PLEASE I NEED HELP ASAP. WILL GIVE BRAINLIEST.

A family wishes to determine the distance from their home to the nearest park. On a coordinate grid, the house sits at (0, 0), and the park at (16, 11). Using 1 unit = 10 yards, which vector represents the path from the house to the park, and what is the actual distance between them?

components: (16,11), distance: 19.42 yards O components: (16,11), distance: 194 16 yards O components: (120,110), distance: 19.42 yards O components: (160,10), distance: 194.16 yards​

Answers

Answer:

components: LeftAngleBracket 16, 11 RightAngleBracket distance: 194.16 yards

Step-by-step explanation:

get her done!!! Correct on Edge 2020

The vector represents the path from the house to the park is components: {16,11} and actual distance between them is 194.16 yards. So, option A is correct.

What is the Pythagoras theorem?

The Pythagoras theorem states that the square of the longest side must be equal to the sum of the square of the other two sides in a right-angle triangle.

|AC|^2 = |AB|^2 + |BC|^2    

In order to find the length of a point to another point that has different y and x points, we will use the pythagorean theorem

(a^2 + b^2 = c^2)

Here, 16 and 11 are the distances from her house,

16^2 + 11^2 = c^2

c^2 = 377

c = 19.416...

Now, we have to convert this to yards;

19.416 x 10 = 194.16 yards

Hence, the vector represents the path from the house to the park is components: {16,11} and actual distance between them is 194.16 yards.

So, option A is correct.

Learn more about Pythagoras theorem;

https://brainly.com/question/343682

#SPJ2

slausonn can you pls answer this quesion pls i have 3 min left

Answers

6 and 17
m+m+1=33
2m=32
m=16

If n ∥ m, which of the following statements are true? Select all that apply.

Answers

Answer:

B. m<3 = 100°

C. m<2 + m<4 = 80°

Step-by-step explanation:

Given that n is parallel to m, the following are the measure of each numbered angles:

m<1 = 60° (vertical angles are congruent)

m<2 = 20° (corresponding angles are congruent)

m<3 = 180 - (m<CAB + m<1) (sum of ∆)

m<3 = 180 - (20° + 60°)

m<3 = 100°

m<4 = 60° (corresponding angles are congruent)

Therefore, the following statements are TRUE:

B. m<3 = 100°

C. m<2 + m<4 = 80°

1.628 > 1.63


I don’t understand math I’m sorry-

Answers

Answer:

So that's actually not true. When comparing decimals you should compare each digit. Remember adding a 0 at the end does not change the value of the decimal. So lets look at it up and down:

remember line up the decimal to decimal

1.628

1.630

the first digit is the same. Both of these numbers are also before the decimal.

let's look at the second digit.

1.628

1.630

they are also the same. Both of these are also right after the decimal point.

now let's look at the third digit.

1.628

1.630

In this case, the bottom number has a higher value. Since 3>2, the bottom number is the overall biggest. Or you could look at it and say "Oh! 30 is bigger than 28!" I hope this helps you, and if this wasn't what you were looking for, oops

13 points answer this asappppp

Find the value of the function below for the given x-value

F{x} = -5x-1 when x=-3

A.15
B 14
C-16
D-14

Answers

The answer is B.14 when you replace the x with -3

If a line on a graph is horizontal, what kind of slope does it have?
a.) undefined slope
b.) negative slope
c.) zero slope
d.) positive slope

Answers

The answer is a zero slope because if slope equals rise:y over run:x a horizontal line is not increasing in y value it’s only increasing in the x value so if y is 0 and x is any number like 5, it would be 0/5 and if you simplify that it would be 0. I hope this helps

Answer:

Zero Slope

Step-by-step explanation:

Hope this helps!

Find the slope and the y-intercept of the graph of the linear equation.
0 = 1 - 2y + 14x

Answers

The slope is 7 and the y intercept is (0,1/2):)

Is 4 x 2/3 greater than 4?

Answers

Answer:

No

Step-by-step explanation:

4 is larger than 1, and 2/3 is less than 1, so if you multiply 4 by anything less than 1 you get a product that is less that the first factor.

Answer:

No

Step-by-step explanation:

Dennis is getting balloons for his grandfather's birthday party. He wants each balloon string to be 9 feet long. At the party store, string is sold by the yard. If Dennis wants to get 69 balloons, how many yards of string will he need?

Answers

Answer:

207

Step-by-step explanation:

9ft=3yrds

3x69=207

What is the equation of a line that passes through the point (−2, 5) and has a slope of zero

Answers

Answer:

y= -2/5x

Step-by-step explanation:

(8+t)^3-6

t=2

(3 is an exponent)

The value is:

Answers

Answer:

994

Step-by-step explanation:

PEMDAS

Parentheses: 8+2 = 10

Exponents: 10^3 = 1000

Subtraction = 1000-6

= 994

Please answer them correctly i need these points please.

Answers

Answer:

The first one is B The second one is D and the last one is A

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