if f(c)=2x^2-x, find f(-4) - f(9)

Answers

Answer 1

Answer:

-13f

Simplify by combining the sum of 4 + 9 with the term "f" and assume integers will be negative.

Related Questions

Use a tree diagram to find how many ways you can arrange the letters in the word FARM.
A) 16
B) 24
C) 256
D) 12

Answers

Answer:

B. 24 posibbly

Step-by-step explanation:


Christine, Kareem, and Trey have a total of $133 in their wallets. Kareem has $5 more than Christine. Trey has 4 times
what Kareem has. How much do they have in their wallets?

Answers

Answer:

Christine has $18, Kareem has $23, and Trey has $92.

Step-by-step explanation:

This can be solved by using variables to represent the unkown values.

x = Christine's money

x + 5 = Kareem's money.

4(x + 5) = Trey's money.

x + (x + 5) + 4(x + 5) = 133

2x + 5 + 4x + 20 = 133

6x = 108

x = $18

This means that Christine has $18, Kareem has $23, and Trey has $92.

Hope this helps

Is the following function linear or nonlinear
t = -8k + 2k - 4
a) linear
b) nonlinear
NEED HELP FAST

Answers

this is a linear function.

Write and solve an equation to find the measure of angle B.

Answers

Answer:

  ∠B = 40°

Step-by-step explanation:

The given angle relations can be expressed in two equations.

__

setup

  A + B = 90° . . . . . . . . angles are complementary

  A×(1 -20%) = B . . . . . B is 20% smaller

__

solution

Using the second equation to substitute for B in the first equation, we get ...

  A + 0.80A = 90° . . . . . . substitute for B

  A = 90°/1.8 = 50° . . . . . collect terms, divide by the coefficient of A

  B = A(0.80) = 40° . . . . find B from A

The measure of angle B is 40°.

Draw a quadrilateral that does not belong. Then explain why.

Answers

Step-by-step explanation:

Rhombus since the other 3 have lines that go accross the graph horizontally for 3 squares.

Before training for the obstacle course, Helena bought a new pair of athletic shoes. She placed the shoes on the floor next to each other and noticed that the right shoe looked just like a reflection of the left shoe. If she had accidentally purchased two left shoes, how would this comparison change?

Answers

The comparison of shoes placed on the floor by Helena next to each other change from reflection to translation.

What do you mean by reflection?

The reflection of a plane or shape is flipping the original figure with respect to a reference line.

The rule of reflection are given below,

Reflection about x-axis (x,y)-->(x,-y)Reflection about y-axis (x,y)-->(-x,y)

Before training for the obstacle course, Helena bought a new pair of athletic shoes.  

She placed the shoes on the floor next to each other and noticed that the right shoe looked just like a reflection of the left shoe. This is because, the separating line works as the symmetry line between both the shoes.

Now she had accidentally purchased two left shoes. Now, if she puts a left shoe to another left shoe, then it looks like the translated image of the first shoe.

Hence, the comparison of shoes placed on the floor by Helena next to each other change from reflection to translation.

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A cosine function is a reflection of its parent function over the x-axis. The amplitude of the function is 9, the vertical shift is 11 units down, and the period of the function is 12π7. The graph of the function does not show a phase shift.

What is the equation of the cosine function described?

Drag a value into each box to correctly complete the equation of the function

Answers

Answer

f(x) = -9 cos((12(pi) / 7)x) -11

The base equation for a cosine graph is

f(x) = a cos(b(x-c))+d

a = amplitude

b = period

c = phase shift

d = vertical shift

if there's a reflection over the x-axis then there is a negative sign in front of the amplitude

I wrote the equation previously but it got deleted so let me know if you have any problems with this explanation

Kaitlyn and Hakim each bought a tube
of candy. Both containers cost the same
amount. Which container required more
plastic to make?
d = 7 cm
CANDY
122 cm
d = 11 cm
CANDY
85 cm

Answers

Answer:

container B requires more plastic to make.

Step-by-step explanation:

Container A:

diameter- 7 cm

height- 122 cm

radius- 3.5 cm

calculating for the surface area

SA=2×π×r×r+2×π×r×h

SA=2(3.14)(3.5)(3.5)+2(3.14)(3.5)(122)

SA=76.93+2681.56

SA=2758.49 cm^2

Container B:

diameter- 11 cm

height- 85 cm

radius- 5.5 cm

calculating for the surface area

SA=2×π×r×r+2×π×r×h

SA=2(3.14)(5.5)(5.5)+2(3.14)(5.5)(85)

SA=189.97+2935.90

SA=3125.87 cm^2

Container B required more plastic to make

Which group had the highest percentage of students like Sport.
………………………………………
b) Which group had the less percentage of students like English.
………………………………………
c) Calculate the percentage of students like Math for each group.
Group A = ……………………………………..
Group B = …………………………………….

Answers

The group that had the highest percentage of students that like Sports is  group B.

The group that had the less percentage of students that like English is group A.

the percentage of students like Math in group A is 30% and 10% in group B

What are the percentages?

A pie chart is a graph that displays information in a circle. The circle is divided into slices which represent a numerical proportion. The sum of angles in a pie chart is 360 degrees

Percentage of students that like sports in:

Group A = [20 / (20 + 15 + 5 + 10)] x 100 = 40%Group B = [22 / (5 + 4 + 9 + 22)] x 100 = 55%

Percentage of students that like English in:

Group A = [5 / (20 + 15 + 5 + 10)] x 100 = 10%Group B = [5 / (5 + 4 + 9 + 22)] x 100 = 22.5%

Percentage of students that like Maths in:

Group A = [15 / (20 + 15 + 5 + 10)] x 100 = 30%Group B = [4 / (5 + 4 + 9 + 22)] x 100 = 10%

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What is the solution of
5/2x-7=3/4x+14
A. X=-6
B. X=6
C.x=8
D. X=12

Answers

Answer:

D. x=12

Step-by-step explanation: quick maths

You first subtract 3/4x from both sides of the equation and that will leave you 7/4x - 7 = 14. Next, you add 7 to both sides and that will leave you with 7/4x = 21. Lastly, you multiply the reciprocal of 7/4 (which is 4/7) to both sides which will give you x = 21 * 4/7 which is x = 12. And x = 12 is your answer!! Hope I answered this ok; it’s my first question that I have answered. I have my work pictured below so you also have a visual of what I did.

need help with all of these questions you see on the top. there the red squares. please someone smart. this is one of the problems I need to finish this tonight.​

Answers

Answer:

2412.7 ft^3

Step-by-step explanation:

If a circle has a diameter 16ft, it's radius is half that, or 8ft. The are of the circle/base of the cylinder is given by the formula [tex]\pi r^2[/tex] where r is the radius. This means the area is 64π ft^2.

To find the volume of a cylinder, you multiply the base area and the height, so the volume would be 64π x 12 which is 2412.74315796. When rounded to the nearest tenth, this is 2412.7.

Since we want to find the volume of a cylinder:

 ⇒ must know the formula: [tex]V = \pi r^2h[/tex]

r: radiush: height

Consider the information given:

Height: 12 ftDiameter: 16 ft  ⇒ Radius: 8 ft  (radius is half of the diameter)

Let's solve:

  [tex]V = \pi r^2*h=3.14*(8)^2*12=2411.52_.cm^3[/tex]

Answer: 2411.5 cm³

Hope that helps!

The mean of the following data is 509. {419,450,462,499,520,521,589,612}

What is the mean absolute deviation for the data set?

Enter your answer as a number rounded to the nearest tenth, like this: 42. 5

Answers

51.5

- - - - - - - - - - - - - - - - - - - - - - - -

" The mean of the following data is 509. {419, 450, 462, 499, 520, 521, 589, 612} "

- - - - - - - - - - - - - - - - - - - - - - - -

First, divide the mean (or average) by the population size (amount of numbers in the set).

509 / 8 = 51.5

There you go! Your absolute deviation.

- - - - - - - - - - - - - - - - - - - - - - - -

Good luck!

~pinetreee

The mean absolute deviation for the data set is 51.5.

What are mean and median?

The mean is the average value which can be calculated by dividing the sum of observations by the number of observations

Mean = Sum of observations/the number of observations

Median represents the middle value of the given data when arranged in a particular order.

We are given that;

Mean= 59

{419,450,462,499,520,521,589,612}

Now,

Count the number of data values in the set. In this case, n = 8.

Subtract the mean from each data value and take the absolute value. For example:

∣419−509∣=90

∣450−509∣=59

∣462−509∣=47

∣499−509∣=10

∣520−509∣=11

∣521−509∣=12

∣589−509∣=80

∣612−509∣=103

Add up all the absolute differences and divide by n. For example:

MAD=890+59+47+10+11+12+80+103​

MAD=412​/8

MAD=51.5

Therefore, by mean the answer will be 51.5.

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simplify (2x²-6x-8)÷(x-4)

Answers

Answer: Heyaa!

The Answer is 2x+2

Step-by-step explanation:

Simplify the expression.

hopefully this helps you !

- Matthew ~

answer is in the attachment hope it helps you ^_^

hello I NEED HELP PLSSS​

Answers

Dang man I also need help to the answers

SOMEONE HELP ME PLEASE??

Answers

Answer: 14

Explanation: This triangle is an equilateral; Meaning all sides are equal.
42 / 3 = 14.

a laptop that was originally priced at $650 was placed on sale for 25% off. when it did not sell it was put on clearance for 30% off the sale price. what was the clearance price of the laptop

Answers

Answer:

$48.75

Step-by-step explanation:

To find 25% of 650 you find 50%. To do this you divide 650 by 2 which is 325. you then divide that by 2 again to get $162.50. That is the sale price.

You now need to find 30% of 162.50. To do that you find 10% 3 times because 10x3 is 30. To find 10% you divide 162.50 by 10 to get 16.25.

16.25x3 is $48.75 which is our answer.

Find the range of the data.

52,40,49,48,62,54,44,58,39
How do I find the range?

Answers

Arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.49

Answer:

The range is 23

Step-by-step explanation:

1. Organize least to greatest:

39, 40, 44, 48, 49, 52, 54, 58, 62

2. Find the largest and the smallest nmber:

39 and 62

3. Subtract:

62

-39

=23

ASAP

“A map uses the scale 3 of an inch represents 3/4 miles. If the actual distance between two cities is
25 miles, then what is the length on the map?”

Answers

Answer:

3 = 3/4

but 3/4= 0.75

3 = 0.75

x = 25

cross multiply

0.75x = 75

divide both sides by 0.75

x = 100

therefore 25miles represent 100inch on a map

Fynn is using the Pythagorean theorem to calculate the slant height of an object. Which object is Fynn most likely working with?
a right cone
a sphere
a right cylinder
an elliptical cylinder

Answers

A right cone is what he his most likely working with

Which data set is the farthest from a normal distribution? a. 2, 3, 3, 4, 4, 4, 5, 5, 6 b. 3, 4, 5, 6, 6, 7, 7, 7, 8, 8, 9, 10 c. 0.9, 1.0, 1.0, 1.1, 1.1, 1.1, 1.2, 1.2, 1.3 d. 4, 4, 4, 5, 5, 6, 7, 7, 8, 8, 8 e. 2, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 10

Answers

The farthest from a normal distribution is,

e) 2, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 10

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given are 4 data sets.

And, We have to check which is farthest from normal distribution.

We know that a normal distribution is bell shaped with mean = median = mode.  

Also 99% lie within 3 std deviations from the mean.

Here, This data set has a bimodal distribution with two distinct peaks, which is not characteristic of a normal distribution.

And, The other data sets have a unimodal distribution with a more symmetrical shape, which is closer to a normal distribution.

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Answer:2, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 10

Step-by-step explanation:

2, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 10

Find the sum of these polynomials. (x2 - 5x + 3) + (2x2 - 3x - 7) = A.3x2 - 8x - 10 B.3x2 - 2x - 4 C.3x2 - 8x - 4 D.3x2 - 2x - 10

Answers

An expression is defined as a set of numbers, variables, and mathematical operations. The sum of the two polynomial expressions (x² - 5x + 3) + (2x² - 3x - 7) is (3x² - 8x - 4).

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

The sum of the two polynomial expressions are:

(x² - 5x + 3) + (2x² - 3x - 7)

= x² - 5x + 3 + 2x² - 3x - 7

= 3x² - 8x - 4

Hence, The sum of the two polynomial expressions (x² - 5x + 3) + (2x² - 3x - 7) is (3x² - 8x - 4).

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Answer:

yk

Step-by-step explanation:

This triangle can be called obtuse or __________.

A: equilateral

B: isosceles

C: scalene

D: right

Answers

C.scalene is the name of the triangle

What is the height of the cone below?
= 90 cm°
B = 18 cm-
© 5 cm
0 6 cm
• 15 cm
© 30 cm

Answers

Answer:

Nearly the answer is 15 cm

because answer is in decimals

In the congruent figures ABCD and WXYZ, which angles are corresponding?
A
A and B

B
B and X

C
A and Y

D
D and W

Answers

Answer: B

The letters have the same positions in the figure names.

In congruent figures ABCD and WXYZ, corresponding angles are angles that have the same position relative to their respective vertices.

In congruent figures ABCD and WXYZ, corresponding angles are angles that have the same position relative to their respective vertices.

For example, angle A and angle W are corresponding angles, as they are both opposite the vertex where angle D and angle X are vertices.

Similarly, angle B and angle X, angle C and angle Y, and angle D and angle W are all corresponding angles in the congruent figures ABCD and WXYZ.

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Complete the conversion.
1 foot = 12 inches
4;, feet =
inches

Answers

Answer:

48 in

Step-by-step explanation:

1ft=12in so 12in x 4ft= 48 in

48 inches 12*4 then that
Is it

Please Help me find the figure , area formula and the area

Answers

Answer:

figure: parallelogram

area formula: base× height

A=bh

A= 13×6

A=78

Step-by-step explanation:

Opposite sides of a parallelogram are congruent.: AD=BC

DC=AB

Work out the value of 8^2+4^3, 5^3-7^2

Answers

Answer:

302

Step-by-step explanation:

help me please please please

Answers

Answer:

0.6915692913385827

Step-by-step explanation:

use pi days arc calc

U
(a) Describe the relationship among the lengths of the segments formed by the secant, and the tangent segment. You may use words and/or an equation

Answers

Answer:

I think that in itself the strongest bond of relationship is the intersecting line that is unified from end to end points

yanni crable deposits $122 in an ordinary annuity at the end of every quarter. The annuity earns 6% interest compounded quarterly. After 4 quarters, the value of $1 with this interest rate is $4.0909. What is the future value of the annuity after 1 year?

Answers

Step-by-step explanation:

future value of annuity after 1 year is:

$122× $4.0909=$499.089

=$499.09

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Five marbles labeled 1 through 5 are placed in a bag. A marble is randomly pulled and the number is recorded before the marble is placed back in the bag. The results of the simulation of 20 marble pulls are shown in a dot plot. Which dot plot models an unfair data generating process? Use this chart to answer the following questions.QUARTERDIVIDEND DIVIDEND FOR 55 SHARES1 $.50/share 27.502 $.35/share 19.253 $.62/share 4 $.50/share 27.50Total Dividends for 1 Year How much would an investor with 55 shares of this stock have earned in dividends in one year?$108.35$106.75$107.85$109.05 The correlation coefficient quantifies the relationship between two variables. This relationship is determined by the degree at which the dependent variable is affected by the value of the independent variable. In real life, why is there a need to quantify relationships and a need to know how to quantify relationships? How do stars die?Pls help Read the paragraph.My cat has never had kittens of her own, but she is always trying to take care of otheranimals, even children. She has a significant maternal instinct that seems to be alwaysavailable to those who need her. She meows in an attempt to comfort my crying baby sisterShe even adopted a family of baby squirrels one spring,What does the word maternal mean in the paragraph?A) support for mothersB) common to mothersC) leading to motherhoodD) planning for motherhood A possible treatment for athletes foot is:A.) Antibacterial creams B.) Antifungal creamsC.) Hydrating lotionsD.) Antiseptic ointmentsChoose one correct answer, please. ty. Based on this, summary who is the protagonist in this story hamlet, the prince Based on your knowledge of Juliet, why does shebecome impatient while waiting for the nurse in thisscene? She is frustrated because she feels the nurse's age isslowing her down.O iS She is angry because she feels the nurse ispurposely taking long time. She is nervous because the nurse is bringing her bignews about Romeo. She is worried because the nurse may be lost andunable to return home. PLEASE HELP WILL MARK BRAINLIEST What was the Ming dynasty's relationship to the Great Wall?Group of answer choices1-The Great Wall was expanded and was relied on for protection during that time.2-The Great Wall began to fall apart and was neglected during that time.3-The Great Wall was repaired in many areas during that time.4-The Great Wall became a symbol of Chinese culture during that time. Differentiate amihan and habagat what caused relations to deteriorate between the united states and the soviet union in 1979? the united states invaded afghanistan to prevent the spread of communism. the soviet union invaded afghanistan to help its communist government. the shah of iran entered the united states, which angered communists. the united states fought the taliban, which angered communists. These proteins identify and lock on to an antigen (pathogen) and then tell other parts of the body to destroy the germ and it is not DA. T Cells B. PhagocytesC. AntibodiesD. Lymphocytes Match items in Column B with the ones in Column A.1. ___ Bueno, nos vemos.2. Hay una fiesta hoy?3. Cmo se llama usted?4. Qu da es hoy? 5. ___ Qu color te gusta?A. El moradoB. Es jueves.C. Chau. Saludos a Teresa.D. S, es el cumpleaos de Juan.E. Soy Marco Antonio Jimnez Sandoval. Part B Next you'll investigate how precipitation varies throughout Earth. Visit the My NASA Data e website and select Data Set in the top left corner. Within the Hydrosphere category, select All Data. Within All data category select Precipitation, and then select Monthly Precipitation. After the new map appears, select Animate near the top of the page, and then select OK to see the animation. Set the time range on the animation for the most recent five years, and then click Submit. You can control the speed of the animation with the controls beneath the map. Question 1 Describe patterns you see in the precipitation on Earth. How do these patterns change during the course of a year and from year to year? Use lines of latitude and the amount of precipitation in millimeters/day (mm/day) in your description. Mrs. Blair believes there is a relationship between the number of minutes students study and their test grades. She asked her history class to list the number of minutes they studied and their test grade. 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(ASAPP) Sedimentary rock formation occurs when igneous, metamorphic, or other sedimentary rocks are exposed to the unyielding forces of nature found on the earth's surface. the formation of sedimentary rock occurs by several processes over millions of years. rock sediments are carried to other places by the wind, running water, and gravity. as these forces lose energy settling takes place. the sediments settle out of the air or water in rock particles graded by size with heavier pieces settle out first. which term describes this process of sedimentary rock formation? a) deposition b) lithification c) physical weathering d) chemical weathering