Which expression is equivalent to X4 - 18X2 +81?
(x-g)(x² +9)
2.
of +9)(x2 +9)
3.
(9-x)(9+x2)
(x² - 9)(x² – 9)
4
Math

Answers

Answer 1
I can’t upload any working right now so I hope you’ll understand from an explanation, all it is is a hidden polynomial. You can say:

Let y=x^2
Then the equation becomes:
y^2 - 18y + 81
Factorise that to give you:
(y-9)(y-9) Or (y-9)^2
But remember, y=x^2. So the equation becomes:
(X^2-9)(X^2-9)

Hope this helped :)

Related Questions

Paul is making a ball-toss game for his club booth at the fair. He wants to make the circumference of the holes at least 3 inches greater but not more than 4 inches greater than the circumference of the ball. One person suggests that Paul can make the diameter of the hole 1 inch greater than that of the ball. Another suggests the diameter should be 2inches greater. Which suggestion should Paul choose? Explain

Answers

Answer:

Paul can make the diameter of the hole 1 inch greater than that of the ball

Step-by-step explanation:

we are going to assume a diameter of the hole has 6in

the radius of the ball is 3in

we looking at a range of the hole greater by (3<4)

we know that the circumference of a circle is given as

the circumference of the ball is

C=2πr

C=2*3.142*3

C=18.85in

The circumference of the hole is ( 1 inch greater )

C=2πr

say the diameter is 6in plus 1in = 7in

the radius =3.5in

C=2*3.142*3.5

C=21.99

compare with the ball the difference is 21.99-18.85

=3.14 which is in the range

The circumference of the hole is ( 2inches greater. )

C=2πr

say the diameter is 6in plus 2in = 8in

the radius =4in

C=2*3.142*4

C=25.13in

compare with the ball the difference is 25.13-18.85

=6.28 which is out of  the range

3. The positive root of 154 is located between which two consecutive integer values?

Answers

Answer:

between 12 and 13

Step-by-step explanation:

answer is 12.4

Answer:

Step-by-step explanation:

12²=144

√144=12

13²=169

√169=13

√154 lies between 12 and 13.

the diagonals of a quadrilateral bisect each other at right angles. What is the quadrilateral best described as?
(a) parallelogram
(b) kite
(c) rhombus
(d) trapezium

Answers

Answer:

trapezium fit the most

Katie is just hired at a new sales company. She is given a $500 hiring bonus. Additionally she earns an average commission of $250 per week. What is the rate of change and initial value for Katie’s salary and what does it mean in this context?

Answers

Answer:

yes there is a mean i got it right on edg 2020

Hope this helps

Step-by-step explanation:

Answer:

Rate of change = 250.

Katie's salary is increasing $250 per week.

Step-by-step explanation:

Model the following situation with an equation or inequality statement.

Twice a number is one.

Answers

Answer:

2x=1

Step-by-step explanation:

Use x for "a number"

x times 2 = 1

2x=1

which solves for 0.5 or 1/2

2x = 1

yea umm her answer was correct! i checked!

Is ABC = def if so name the postulate that applies

Answers

The triangles do not meet the criteria of any postulate, therefore, they might not be congruent.

What are Congruent Triangles?

There are criteria that can be used to show that two triangles are congruent to each other. They are:

ASA postulate: This says that two triangles are congruent if they have two pairs of congruent angles and one pair of included congruent sides.SAS postulate: This says that two triangles are congruent is they have two pairs of congruent sides and one pair of included congruent angles.HL postulate: If both triangles have equal hypotenuses and a pair of congruent corresponding legs, then they are congruent triangles based on this postulate.SSS postulate: both triangles are congruent if they have three pairs of congruent sides.

However, two triangles can have three pairs of congruent angles and may not necessary be congruent triangles.

The triangles in the image below shows that the two triangles have three pairs of corresponding congruent angles. This information is not enough to prove they are congruent.

The answer is, C. Might not be congruent.

Learn more about congruent triangles on:

https://brainly.com/question/2938476

#SPJ1

A bird leaves its nest and travels 10 miles per hour downwind for 3 hours. On the return trip, the bird travels 2 miles per hour slower and has 4 miles
left after 2 hours.
How long does the entire trip take?

Answers

Answer:

5 hours

Step-by-step explanation:

10-2=8 now add the hours

Solve for the value of q.
134°
(9q-8)

Answers

Answer:

If you mean that 134 degrees = (9q - 8), the answer is: q = 15.78 degrees

Step-by-step explanation:

134 degrees = 9q - 8

142 = 9q

142/9 = q

15.78 = q

q = 15.78 degrees

x−y=−8 in slope intercept form

Answers

Answer:

-y=-x+-8

Step-by-step explanation:

Answer:

y = x + 8

Step-by-step explanation:

Slope-intercept form looks like y = mx + b.

We have X−y=−8 and need to solve this for y:

Change all signs, obtaining -x + y = 8

Add x to both sides, obtaining  y = x + 8

What is an equation of the line that passes through the point (8,2) and is parallel to the line x+4y=28

Answers

Answer:

y = -1/4x + 4

Step-by-step explanation:

x+4y=28

4y = -x + 28

y = -1/4x + 7

slope m = -1/4

Parallel lines have similar slope so we'll use -1/4 from above and given point (8,2) to find y-intercept.

y = mx +b

2 = -1/4(8) + b

2 = -2 + b

b = 4

Using m and b from above we can now form the new equation of line that is parallel to y = -1/4x + 7.

y = mx + b

y = -1/4x + 4

What is the domain of the given relation?
{(1, 3), (0, 4), (2, 1)}

Answers

Answer:

1, 0, and 2

Step-by-step explanation:

the domain is the first number in each ordered pair.

Answer:

1, 0, 2 are the domain.

Step-by-step explanation:

All x-values are the domain and all the y-values are the range.

Hope that helps and have a great day!

Can anyone help me please??

Answers

Answer:

A goes with C

B goes with D

C goes with A

D goes with B

Step-by-step explanation:


Skisksjsjdjsjsjsjidjejwujejwjsjd

What is the answer to 5+(x−2)=−8

Answers

Answer:

x= -11

Step-by-step explanation:

Use Math  way.

What number makes the equation true? Enter the answer in the box. + 6 = 7​

Answers

Answer:

1

Step-by-step explanation:

1 + 6 = 7

Answer:

1+6=7

Step-by-step explanation:

Which describes the association between variables x and y ?

Answers

A strong positive

The plot has a positive slope and very close together pattern, so I would say a strong positive

PLEASE HELP!

Your life insurance policy is $5.01 per pay. If you are paid biweekly, what is your total annual cost for life insurance?

A. $88.76
B. $60.12
C. $130.26
D. $120.24

Answers

Answer:

d 120.24

Step-by-step explanation:

In the sentence below, which word or phrase refers to a mathematical operation?
While driving on the freeway, Jennifer was operating her vehicle at 10 miles per hour more than Amy.
A. more than
B. miles
C. 10
D. operating

Answers

Answer:

a

Step-by-step explanation:

for she was going faster then amy

The answer is A) More than. It is because, more than is indicated an addition problem.

Helpppppppp pleaseeeeee

Answers

Answer:

negative

Step-by-step explanation:

okay so look at the rise and the run of this line (that is given). slope is defined as rise divided by run. the "rise" is the change in y values, while the "run" is the change in x values. the rise in this problem is -4, as shown on the graph. the run is 3, as also shown there. therefore, the slope is -4/3. the type of slope this is is negative slope because the slope is clearly negative.

Answer:

-4/3

Step-by-step explanation:

(-1 -  3)/(1 - -2)

use the slope formula (y2 - y1)/(x2 - x1)

Domain?
Range?
Function?

Answers

Answer:

domain is all real numberange

D = 1 < x < R
R = 3 < y < R
F = f(x) = 1x

I hope this is right :D

HELP YALLL

I’m not good at math

Answers

Answer:

7x^2−19x+10

Step-by-step explanation:

3 x 2 − 14 x + 16 + 4 x 2 − 5x − 6

 

Which statements about density curves are true? Check all that apply.
The mean of a density curve is indicated by X.
The mean of a density curve is indicated by u.
The standard deviation of a density curve is indicated by o.
The standard deviation of a density curve is indicated by Sx.
The density curve can be above and below the x-axis.

Answers

Answer:

The mean of a density curve is indicated by µ.

The standard deviation of a density curve is indicated by σ.

This is the answer Egde 2020

The statements which are true about density curves is the mean of a density curve is indicated by u and the standard deviation of a density curve is indicated by Sx.

What is a density curve?

The density curve is a way of representation of numerical distribution data in graphical manner, where the outcomes are continues. The density curve can not be below the x-axis or horizontal line of the graph.

In a density curve,

The mean of a density curve is indicated by μ (mu).The standard deviation of a density curve is indicated by Sx.The density curve can only be above x-axis and not below it.

Thus, the statements which are true about density curves is the mean of a density curve is indicated by u and the standard deviation of a density curve is indicated by Sx.

Learn more about the density curve here;

https://brainly.com/question/25334760

#SPJ2

Consider this equation.


7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)



Mia solved the equation and determined that m = 2. Is she correct?

She is incorrect because when substituting 2 for m the result was a true statement.

She is incorrect because when substituting 2 for m the result was a false statement.

She is correct because when substituting 2 for m the result was a true statement.

She is correct because when substituting 2 for m the result was a false statement.

Can someone please help me?

Answers

Answer:

it's wrong

Step-by-step explanation:

because the answer in this 7.8 + 2(0.75m+ 0.4) is not 6.4

Answer:

B she is incorrect because when substituting 2 for m the result was a false statement

Step-by-step explanation:

i just did it on edge

You start at (0, -2). You move down 3 units. Where do you end?

Answers

Answer:

(0, -5)

Step-by-step explanation:

When you move down you subtract the amount from the y-axis.

can i get some help plz its hared

Answers

Reflection, then rotation

Sal made 8 ft of sausage links on Friday morning. He used 4 ft for dinner service on Friday night. On Saturday morning, he made another 8 ft of sausage links and used 12 ft for dinner service Saturday night. What is the net change in the amount of sausage Sal had from Friday morning until after dinner service Saturday night?

Answers

Answer:

Net change in the amount of sausage Sal had from Friday morning until after dinner service Saturday night = 8 - 0 = 8 ft

Step-by-step explanation:

Amount of  sausage links made on Friday morning = 8 ft

Amount of  sausage links used on Friday night = 4 ft

Amount of  sausage links remaining = 8 - 4 = 4ft           (i)

Amount of  sausage links made on Saturday morning = 8 ft         (ii)

So,

Total amount of  sausage links = 8 + 4 = 12 ft   (from (i) and (ii) )

Amount of  sausage links used on Saturday night = 12 ft

Amount of sausage links remaining = 12 - 12 = 0 ft

Net change in the amount of sausage Sal had from Friday morning until after dinner service Saturday night = 8 - 0 = 8 ft

Classify the quotient as positive ,negative,zero undefined -15 divided by (-5)

Answers

positive

step by step explanation

HELP!

Keiko has a 20% copays for hospital visits after paying her deductible. Assuming she already paid her deductible earlier in the year, how much will she pay (copay) for a hospital bill of $3,291?

A. $328.90
B. $658.20
C. $2,632.80
D. $1,645.50​

Answers

Answer:

$658.20

Step-by-step explanation:

Money paid in deductible = $3,291

percentage of money to be co-paid = 20% of Money paid in deductible

Thus, she has to 20 percent more which will be 20/100 th part of money paid in deductible.

Solving it we have

Money to be co-paid =  20% of $3,291 = 20/100 * $3,291 =  $658.20

Thus, Keiko will  pay (copay) $658.20 for the hospital bill

What is the probability he takes a yellow jellybean?

Answers

Answer: 3/20

Step-by-step explanation:

12/80 is simplified to 3/20

Answer: The answer is D

Step-by-step explanation: Add them all up and you get 80 then 12/80 divided by 4 is 3/20

Emma jogs 2 miles along the beach in 1/3
of an hour. If she travels at a constant rate, how far will she jog in an hour?

1. Use the known information to write a rate.

Emma’s rate:
2 miles 1/3 hours

2. Write an equivalent rate with a denominator of 1.

2(3) miles / 1/3 (3) hours = ? /1 hour

Answers

Answer:

Step-by-step explanation:

6 miles

2 times 3 = 6

or

2 x 3/3 = 6

5. What is the y-intercept of the given
graph?
y-intercept:

Answers

Answer: Y intercept is 1

Answer:

1

Step-by-step explanation:

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