What are zeros of x^2-81=0?
I will mark branliest no trolls pls with work would be much appreciated.

Answers

Answer 1

Step-by-step explanation:

x^2=81

x=±9

Answer is -9 and +9


Related Questions

The sum of 32 and n is equal to 44.29.
Enter the equation described in the sentence.

Answers

Answer:

32 + n =44.29

Step-by-step explanation:

the sum of 32 and n means add n to 32 or 32 + n

The circumference of a circle is 144πft. What is the radius?

Answers

The radius is 22.93 ft.

How many dollars will Ms. Davis have saved after 30 weeks?

Ms. Davis has $54.50 saved

• She will save $33.25 each week for the next 30 weeks

• She will not spend any of the money

Enter your response here:

Answers

Answer:

$1,052

Step-by-step explanation:

.................

Answer: 1,052

Step-by-step explanation: Okay so she has $54.50 saved right now and she wants to save $33.25 each week for the next 30 weeks so we're multiplying. 33.25x30= 997.5 plus the money she has right now is 997.5+54.50= 1,052

Solve for x

(5x-1) 8x

Answers

90 + (5x-1) + 8x = 180
90 + 5x - 1 + 8x = 180
89 + 5x + 8x = 180
89 + 13x = 180
13x = 91
x = 7

Please please please help

Answers

I believe it’s 80^, sorry if i’m wrong :)

the answer would be 100

Step-by-step explanation:

55+45=100 because all yout have to do is add angle A and angle B together

I need help doing this ?

Answers

It should be approximately 21.6 years.

Answer:

It would be 21.6

Step-by-step explanation:

First 2% of 16000 is 320.

Now we take our wanted value of 22900 and subtract 16000 from it to get 6900.

We take our difference of 6900 and divide this by 320 and get 21.5625

That rounded to the nearest tenth is 21.6

if u have 21 pieces of cloth to make 6 cloaks how many cloaks will 7 pieces make?​

Answers

Answer:

2

Step-by-step explanation:

im not sure is this is correct but I put

21÷6=3.5

7÷3.5=2

Write an equation using slope intercept form when m=4 and b=12

Answers

Answer:

y = 4x + 12

Step-by-step explanation:

slope-intercept form is y = mx + b, where m = slope and b = y-intercept.

since you're given the values for m and b, all you need to do is plug those into the equation for slope-intercept form.

plug in 4 for m.

y = mx + b ⇒ y = 4x + b

plug in 12 for b.

y = 4x + b ⇒ y = 4x + 12

it doesn't matter which one you plug in first as long as you plug the value in for the correct variable.

the equation of your line in slope-intercept form is y = 4x + 12. i hope this helps! have a great day <3

297-325 over 297
how can i turn that fraction into a percentage?

Answers

Answer:

Step-by-step explanation:

by moving the decimal 2 times to the right

2. Which of the following is the correct interpretation of confidence interval? (circle one)
a. If the same experimental process is done on many samples, with a given percentage certainty,
the population parameter will fall within a calculated range.
b. When many different processes are done on the same sample, with a given percentage certainty,
the population parameter will fall within a calculated range.
c. If the same experimental process is done on many samples, with a given percentage certainty,
each sample will determine its own calculated range with a given percentage certainty
3. In a certain study, a population parameter is predicted to be in the interval (42, 60) at a 95% confidence
level. What is a reasonable confidence interval if the confidence level is adjusted to 98%
Explain your answer.

Answers

B. The answer is b hehehehhehsheus

Mason opens a savings account by making a $165.85 deposit. Every week, he deposits another $20.50 in the account. The following expression shows the amount of money that will be in the account x weeks after Mason opens it.

165.85 + 20.5x



How much money will be in the account after 10 weeks?

After 10 weeks, there will be $
in the account.

Answers

Answer:

370.85

Step-by-step explanation:

An Auto Shop charges $60 per hour
for labor plus a $30 fee for materials.
Which equation can be used to find
y, the total cost for x hours of labor?

Can someone please help

Answers

Answer:

60x + 30 = y | Honestly not sure if it's right but I wanted to help anyways!

Step-by-step explanation:

Solving One-Step Equations
Compute:
x = 10 = 8

Answers

Answer:

x = 2

Step-by-step explanation:

x = 10 = 8 | Given expression

x = 2 | Subtraction property of equality (Subtract 8 from 10.)

What is the distance from J To K

Answers

Answer:

C. 13 unit

Step-by-step explanation:

I got right

Y - 0.8x = 0.5
5y - 2.5 = 4x
*Substitution
ANSWER CORRECTLY WITH SHOWN WORK, PLEASE AND HURRY!!

Answers

Answer:

[tex]y=\frac{5+8x}{10} , x=x[/tex]

Step-by-step explanation:

y-0.8x=0.5

y*10-0.8x*10=0.5*10

10y-8x=5

10y-8x+8x=5+8x

10y/10=5/10+8x/10

y=5+8x/10

5*5+8x/10-2.5

8x+5/2-2.5=4x

y=5+8x/10, x=x

I need answer ASAP: You are running a fuel economy study. One of the cars you find is blue. It can travel 40 1/2 miles on 1 1/4 gallons of gasoline. Another car is red. It can travel 22 2/5 miles on 4/5 gallons of gasoline. What is the unit rate for miles per gallon for each​ car? Which car could travel the greater distance on of​ gasoline?

Answers

Answer:

Blue:  32.4 mpg

Red:  28 mpg

The Blue car will travel farther on a gallon of gasoline

Step-by-step explanation:

Blue: 40.5/1.25=32.4 mpg

Red: (22 2/5)/(4/5) =22.4/0.8=28 mpg

Which scenario matches the relationship shown in the table?
A. Adi makes 25 dollars an hour.
B. Adi spent 25 dollars on a calculator.
C. Adi divided 25 dollars between her sisters.
D.Adi makes 1 hour for every 25 dollars.

answer: A. Adi makes 25 dollars an hour.

Answers

Answer:

You are correct!! The table does show that she makes 25 dollars in 1 hour.

Am i suppose to answer it because you already said the answer is A. Well, You're right.

And Thank you!

The sum of two integers is 3. Their difference is 1. What are the two integers?

Answers

Answer:

2 and 1

Step-by-step explanation:

2 + 1 = 3

2 - 1 = 1

Consider the quadratic expression given below.

4x^2 + 8x -60

Factor the following expression completely.

Answers

factor out 4
4(x^2 + 2x - 15)

to factor the equation inside the parenthesis, find two numbers that multiply to -15 and add to 2
those numbers are: 5 and -3

the answer is: 4(x+5)(x-3)

find the value of x for the question shown above​

Answers


hint; the sum of all angles in a triangle is 180° !

^so all together it’s gonna be 180 !

hope this helped !

i’m pretty sure the value of it (x) is 12 but am not sure

Paul plans to buy a movie that has a regular price of $19.99. It is on sale for 25% off, but Paul will have to pay 6% sales tax. Which is the MOST reasonable estimate of the total cost of the movie including tax?




A $14:00
B $15:00
C $16:00
D $17:00

Answers

B is your answer for this question

Answer:

$16.00

Step-by-step explanation:

19.99 x .75 = 14.9925

14.9925 x 1.06 = 17.89205

whats is x − 2 /3 = 1 5 /6??

Answers

answer: 2 1/2
explanation: 1 5/6= 11/6 ; 11/6 + 2/3= 5/2 ; 5/2= 2 1/2

Erika write the following word expression on the board: The quotient of 24 and k. Write an algebraic expression for the word expressions. THEN evaluate (solve) the expression for k = 3

Answers

Answer:

a)  x=24/k

b)  x=24/3

    x=8

Step-by-step explanation:

Quotient meant division and you are trying to find the quotient (x) so you divide 24 by 3 to get 8

Find the composition of transformations that map ABCD to EHGF. 3 Reflect over the [? ]-axis , then translate (x+[ ],y+[ 1) . 2

Answers

Answer:

x3 y1

Step-by-step explanation:

ABCD reflects over [tex]X-[/tex] axis.

Then translated to [tex](x+[6],y+[-1])[/tex].

What is Transformation?

A single or multiple changes in a geometrical shape or figure is called Geometrical Transformation.

What is Reflection?

A geometrical transformation in which a geometrical figure changes his position to his mirror image about some point or line or axis is called Reflection.

We can see in the given figure that ABCD becomes EHGF after reflecting over [tex]X-[/tex] axis.

So now A became the point E.

We can see in the figure that the coordinates of A were [tex](-5,2)[/tex]

And now the coordinates of E are [tex](1,1)[/tex]

So, [tex](-5+[6],2+[-1])=(1,1)[/tex]

Hence the transformation is [tex](x+[6],y+[-1])[/tex].

Learn more about Geometric Transformation here -

https://brainly.com/question/24394842

#SPJ2

Find the area of the figure.

Answers

418/2cm I think so, area of the figure

If f(x) = 3x - 15, what is f(4)?
A. 3
B. -3
c. 12
D. -8

Answers

Answer:

B. -3

Step-by-step explanation:

f(x) = 3x - 15

f(4) means x=4, so you want to plug 4 into the equation.

f(4) = 3(4) - 15

f(4) = 12 - 15

f(4) = -3

Answer:

B

Step-by-step explanation:

f(4) has the same meaning (for this question ) as x = 4

Let x = 4

f(4) = 3*4 - 15

f(4) = 12 - 15

f(4) = - 3

B

There are 15 people on a bus. Some are adults. Some are children. There are more adults than children. Write down three different ratios of adults to children on the bus.

Answers

Answer:

Step-by-step explanation:

A ratio would mean that for every x number of adults there are a y number of children and the total in this scenario would need to total the 15 individuals in the bus. Therefore, since there has to be more adults than children then any of the following three ratios would be valid.

10 adults :: 5 children

14 adults :: 1 children

5 adults :: 3 children

All three of these ratios add up to be the 15 total individuals in the bus and also fit the requirement that there are more adults tan children.

1/2 gallon of apple cider is $2.80. What is the price per ounce ?

Answers

Answer:

35 cents

Step-by-step explanation:

If this answer helped you then please consider liking this and marking it as brainliest :)

Find the product for 1.29 x 5.4

show work please <3.

Answers

Answer:

6.966

Step-by-step explanation:

•Mark how many you have in the d.p

•If there is two or more add them up

•Multiply like normal given numbers

•Write where the decimal point is to be

Hope that helps

The answer you are looking for is 6.966. You multiply the numbers as normal, the place the decimal based off of how many numbers are behind the 2 decimal points given. 1.29 has 2 numbers behind the decimal, and 5.4 has 1. 1 + 2 = 3, so from the right of the last number on the right side, you move the decimal 3 places.

Here's an image to show you how I solved the problem.

I hope this helps!!

Six more than twice a number is greater than negative fourteen. Solve the inequality for the unknown number

Answers

Answer:

Step-by-step explanation:

2x+6 > -14

Subtract 6 from both sides

2x > -20

Divide both sides by 2

x > -10

The solution of the inequality 2x + 6 > - 14 will be greater than the negative 10.

What is the solution to the equation?

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.

Six more than twice a number is greater than negative fourteen.

Let x be the number. Then the equation will be

2x + 6 > - 14

Simplify the inequality, then the value of x will be

2x > - 20

x > - 10

The solution of the inequality 2x + 6 > - 14 will be greater than the negative 10.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ2

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