f(n)=n2 – n; Find f(9) help!

Answers

Answer 1

its 72

I think its right?


Related Questions

Factor 4x^4+8x^2+1
PLZ try hurry ;-;.....anyone?

Answers

the expression is not factorable with rational numbers.

10
10
Identify the equation of the graph shown.
y = 2x - 3
B)
y = 2x + 6
C)
y = 0.5x + 6
D)
y = 0.5x - 3

Answers

Answer:

The answer is C hopefully this helps

Step-by-step explanation:

Hamburgers are sold in packages of 20, while buns are sold in packages of 12. What are the least numbers of packages you should buy in order to have the same number of hamburgers and buns?

Answers

Answer:

3 packages of hamburger and 5 packages of bun.

Step-by-step explanation:

3x20=60

5x12=60

The answer is 60 ;) got it right

What single percentage change is equivalent to a 12% decrease followed by a 18% increase?

Answers

Given:

12% decrease followed by a 18% increase.

To find:

The single percentage change is equivalent to the given set of percentages.

Solution:

Let the initial value be 100.

After 12% decrease, the value is:

[tex]v_1=100-\dfrac{12}{100}\times 100[/tex]

[tex]v_1=100-12[/tex]

[tex]v_1=88[/tex]

After 18% increase, the value is:

[tex]v_2=88+\dfrac{18}{100}\times 88[/tex]

[tex]v_2=88+15.84[/tex]

[tex]v_2=103.84[/tex]

The initial value  is 100 and the new value in 103.84. So, it represents  increase in the value. So, increase percentage is

[tex]Increase\%=\dfrac{\text{New -Initial}}{\text{Initial}}\times 100[/tex]

[tex]Increase\%=\dfrac{103.84-100}{100}\times 100[/tex]

[tex]Increase\%=3.84[/tex]

Therefore, the value increased by 3.84%.

A sundial that measures 38 inches across its center is shown on the concrete slab. In terms of π, what area of the slab is covered by the sundial?

Answers

Answer:

that answer is incorrect for usatestprep it is B for usatestprep

Step-by-step explanation:

Area covered by sundial is 4,534.16 inch²

Area of circle;

Given that;

Length of radius = 38 inches

Find:

Area covered by sundial

Computation:

Area covered by sundial = πr²

Area covered by sundial = (3.14)(38)²

Area covered by sundial = (3.14)(1,444)

Area covered by sundial = 4,534.16 inch²

Find out more information about 'Area of circle'.

https://brainly.com/question/1238286?referrer=searchResults

what is 5+37+1=?

I could use some help I have been stuck on this one all day is anyone good at math and wants to help me?

Answers

43 is the answer

Hoped I help :)

Answer:

the answer to the equation 5+37+1 = ? is 43

Step-by-step explanation:

37+5= 42

42+1= 43


A sequence is given by the rule 4n – 5
Will the number 25 be a term in the sequence?
Explain why or why not.

Answers

What you can do: (n)a=(n)(4+1/n)
Know divide away each n on respective side you get:
a=4+1/n
Know when n=0, 1/0 is not defined there’s that
n=1 , 4+1/1 = 5
n=2 , 4+1/2 = 4.5
n=3 , 4.33
n=4, 4.25

(Zoom in to see the problem)

I’M MAKING BRAINLIEST!!!!

Answers

your marking the 4,4 coordinates

Answer:

click the points (0,4) and (1,5)

Step-by-step explanation:

y = x+4

if x  =  0 then

y = 0+4

so y = 4

0 , 4

then if x = 1

y = 1+ 4

so y = 5

1 , 5

please help <3 it would mean the world to me

Answers

Answer:

9

Step-by-step explanation:

Answer:

9 Is the answer

Step-by-step explanation:

Can i have brainliest??? thx

$70 shoes, with 6% sales tax

Answers

Answer: $4.20

Step-by-step explanation:

Answer:

Shoes would cost $74.2 with tax

Step-by-step explanation:

70 * 0.06 = 4.2

70+ 4.2 = 74.2

HELP ME PLEASE FOR THE SAKE OF GOD :)

Answers

200•0.08=16
200+16=216
The initial amount after a year will be 216$

What is the answer to thisss ?????

Answers

Answer: 64 minutes to put as many boxes as possible.
Explanation: The dimensions of Ellie's boxes in meters are: 0.45m by 0.40m by 0.35 ( to convert from centimeters to meters we just divide by 100, because 1m =100cm). therefore the volume of each box is 0.063 m3
Now the dimensions of the empty van are 3.6m by 1.6m by 2.1 m, therefore its volume is: 12.096 m3

So the amount of boxes that Ellie can put in the van is equal to the volume of the van divided by the volume of each box: 192 boxes

So 192 boxes can be put into the van.
Now Ellie can put 3 boxes in the van in 1 minute, therefore the amount of time it will take her to put 192 boxes into the van will be: 64 minutes

So it takes Ellie 64 minutes to put as many boxes into the van as she can.

this is number 19....​

Answers

Answer:

b

Step-by-step explanation:

Solve for d.
d³ = 27

Answers

Answer:

The answer is 3

Step-by-step explanation:

3×3×3=27

Answer:

the answer is 100% 3

Step-by-step explanation:

Dennis got 85 percent of the questions on the math test correct, which was out of 40. what was his actual mark?​

Answers

Answer:

34/40

Step-by-step explanation:

85/100 cross multiply x/40

100x/100=3400/100

x=3400/100

3400/100=34

x=34

Picture included

(Sorry about my handwriting)

Hope this helps!! :)

Stay safe and have a wonderful day/night!!!!!

Brainliest?!?!

PLEASE ANSWER
What
is the value of x?
Enter
your answer in the box.
X=

Answers

Answer: 20°

Step-by-step explanation:

Set up your work like this and solve.

3x+50=6x-10

60=3x

20°=x

I need to solve for x this is really easy I just don't have the time to do it please help.​

Answers

Both of the angles need to equal to 180 (since they are interior angles)

2x+76=180
2x=104
x=52

Hope this helps!! :)

Answer:

2x+76°=180°[by co interior angle]

2x=180°-76°

2x=104°

x=104°/2

x=52

Select all of the true equations.
sin(27)=x/15
cos(63)=y/15
tan(27)=y/x
sin(63)=x/15
tan(63)=y/x

Answers

Answer:

cos(63)=y/15

tan(27)=y/x

sin(63)=x/15

Step-by-step explanation:

You need to memorize the definitions of all the trig functions.  Then these types of problems will be easy for you.  OK?

HELP!!! WILL MARK AS BRAINLIEST !!!

Answers

Answer:

I cant see the photo it won't load

Step-by-step explanation:

HELP!!!
A punch recipe requires 2 cups of cranberry juice to make 3 gallons of punch. Using the same recipe, what is the amount of cranberry juice needed for 1 gallon of punch?

Answers

Answer: 3/4 cup

Step-by-step explanation: yeah

Can anyone help me with this question please.

Answers

Answer:

$30 initially

$1.20 per song

Step-by-step explanation:

27.6 - 26.4 = 1.2

Add $2.40 to $27.60 to find balance before purchasing the initial 2 songs: $30

Select all of the expressions that are less than 10 2/3.
A.10 2/3 ×9/10
B.1 × 10 2/3
C. 10 2/3 × 2 1/3
D. 1/8 × 10 2/3
E.10 2/3 × 3/5

Answers

A. 10 2/3 x 9/10 = 9 3/5
D. 10 2/3 x 1/8 = 1 1/3
E. 10 2/3 x 3/5 = 6 2/5

Hope This Helps.

Answer:

A D E

Step-by-step explanation:

i did the test

What is the slope of the line represented by the equation y = x - 3?

Answers

The slope is 1. However it may be asking for the Y-intercept which is -3 on that line.

Answer: A (-3) is correct

Explanation: Edge:2023

simplify 74.34 - 2.1 × (6.05 - 4.05)³

Answers

577.92 assuming that that’s a multiplication symbol and not an X

Write each number in standard form.

6.1 × 104

Answers

634.4   so the standard form is 600  + 30  + 4  + 0.4

Answer:

634.4 or 6.344*10^2

Step-by-step explanation:

When you're being asked to write an expression in standard form, the question probably wants you to simplify the expression or write it in scientific notation

Usually, in lower levels, you would simplify the expression, in which case you would multiply 6.1 by 104 using either a calculator (if you're allowed) or on paper to get 634.4

If you think your teacher wants you to use scientific notation, you would want to write your expression as a number under 10 multiplied by a power of 10. For example, if you were looking to write 6*8 in scientific notation/standard form, you would simplify for a product of 48, and turn that into 4.8*10. In your problem, you can multiply 6.1*104, and write your product of 634.4 as 6.344*10^2

please tell me if there are any mistakes in my answer, if i wrote anything poorly, or if anything is hard to understand, i hope this helps!!

A store is going out of business, they are advertising that "Everything is 40% Off!" You have had your eye on a new pair of shoes that were originally $156. What is the sale price of the shoes?

Answers

Answer:

$93.6

Step-by-step explanation:

The original price if this show is to be sold at $156

But the question tells us that everything is being sold with a 40% off.

So we should get 40% of 156

= 0.40 * 156

= $62.4

So this shoe would have it's new price to be $(156 - 62.4) = $93.6

So in conclusion given a 40 percent off, the sales price if the shoe would be $93.6

Write an equation for each graph in a slope
Intercept form

Answers

Answer:

y=2x-3

Step-by-step explanation:

Y-intercept can be read off the graph.

Slope can be determined using the formula:

y2-y1 divided by x2-x1 (Substitute co-ordinates)

Answer:

y=2x-3

Step-by-step explanation:

y=mx+b

Where m is the slope and b is the y intercept

Slope is rise over run, the line is up 2 over 1

And the point of the line where it meets the y axis is -3. so b is -3

Not sure how to do this problem.

Answers

Use mathpapa, Photomath, or Symbolab

B. ( -3, 4) , ( 3, 4 ) , ( 1, -4 ) , ( -2, -4 )
D. ( -4, 1) , ( 1, 2 ) , ( -1, -4 ) , ( -3, -4 )
C. ( -2, 3) , ( -4, 3 ) , ( -1, 2 ) , ( -4, -2 )
A. ( -3, 4) , ( -4, 3 ) , ( -4, 1 ) , ( -2, -4 )

Answers

Answer:

B

Step-by-step explanation:

There isn't really much explaining I can do but each time you find the co-ordinate of a point you can cancel out a possibility.

For example, one of the points is (-3,4) and the only one without this point is C so that answer is cancelled out, and you keep going this way until you are left with only on possible answer and that should be B.

Top left = (-3,4)

Bottom left = (-2, -4)

Top right = (3,4)

Bottom right = (1,-4)

The answer is B.

(-3,4) is the point/dot on the top left corner.

(3,4) is the point on the top right corner.

(1,-4) is the point on the bottom right corner.

(-2,-4) is the point on the bottom left corner.

brainliest for correct answer​

Answers

The slope is 3/1 because when it rotates the slope will not change

Answer:

-1/3

Step-by-step explanation:

when rotating 90 degrees,

(x,y) -> (y, -x)

-1-0/ 3-0

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