Mathematics High School

if f (x)= x2- 2x : which of the following is the value of f (4)

Answers

Answer 1

62031549163916391638173163

Related Questions

What is the value of x?

Answers

Answer:

Step-by-step explanation:

Since UV is a tangent then ∠ WUV = 90°

WZ = WU = x - 1 ( both radii of the circle ) , then

WV = x - 1 + 2 = x + 1

Using Pythagoras' identity in the right triangle

WU² + UV² = WV² , that is

(x - 1)² + (2x - 4)² = (x + 1)² ← expand factors using FOIL

x² - 2x + 1 + 4x² - 16x + 16 = x² + 2x + 1

5x² - 18x + 17 = x² + 2x + 1 ← subtract x² + 2x + 1 from both sides

4x² - 20x + 16 = 0 ← divide through by 4

x² - 5x + 4 = 0

(x - 1)(x - 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 1 = 0 ⇒ x = 1

x - 4 = 0 ⇒ x = 4

But x ≠ 1 as radius x - 1 = 0

Thus x = 4 → B

BRAINEST for whoever answer right first

Answers

Answer:

(4,1) (5,19) (6,5) (11,80)

Step-by-step explanation:

In an ordered pair x aways comes first

help me plz i asked this question too much

Answers

Answer:

24 cookies in each bag

Step-by-step explanation:

36 cookies X 8 bags = 288 cookies

240 cookies / 20 cookies = 12 bags

288 cookies / 12 bags = 24 cookies

23
The Acme Company produces metal rods. The largest rod that the Acme company produces is 10 feet long and 2 feet in diameter. How much material (the volume) is required to produce 1 metal rod? Round to the nearest tenth.V

Answers

Step-by-step explanation:

i think it's mensuration qn isn't I'm anmol

Help ASAP!!! Question in pic! Will give brainliest!

Answers

Answer:

It is 15.

Step-by-step explanation:

We know the common difference is 2 right?

Those are 5 times, so its 15.

(Can I get Brainliest)

Answer:

Step-by-step explanation:

because the common difference is 2, it would look like this: 7,9,11,13,15

Help me please this is my homework question

Answers

512 c2 so A sorry if im wrong

Answer:

384

Step-by-step explanation:

So there are 6 faces in a cube so first you need to know how big is one face then just multiply by 6 for all 6 faces. so 8*8 = 64. that means 64 is the area of one face.

then multiply that by 6 to get the total surface area.

there it is your answer 384 the 3rd option there

URGENT !!!!!!!!! Please answer correctly !!!!! Will be marking Brianliest !!!!!!!!!!!!!!!!

Answers

-2/5
Step by Step :
18 - 8 = 10
-15 - 10 = -25
10/-25 = -2/5

Solve the equation:
7m+19/2=13

Answers

Answer:

Step-by-step explanation:

7m+19/2=13

7m +19 = 13 x 2

7m = 26 - 19

m = 7/7 = 1

Another way :

7m+19/2=13

7m = 26/2 - 19/2

7m = 7

m = 7/7 = 1

Both ways r correct !!

I hope im right!!

What value of x will make the equation below true?
X - 15 = 12

Answers

Answer:

Step-by-step explanation:

x-15=12

add fifteen to both sides

x-15+15=12+15

x=27

Answer:

Step-by-step explanation:

27-15=12

!!!PLEASE HELP!!! The distance, y, in centimeters, of an ant from a hole in the tree for a certain amount of time, x, in seconds, is shown in the graph

Part A: Is the graph linear or nonlinear? Explain your answer. (2 points)
Part B: In which segments is the graph increasing, decreasing, and constant? (3 points)
Part C: In your own words, describe the motion of the ant, as shown on the graph. (5 points)

Answers

Answer:

Step-by-step explanation:

f(x) = x² - 6x
g(x) = (square root) x
Evaluate.
f(g(25)) =

Answers

Answer:

-5

Step-by-step explanation:

is a ez question

Answer: -5

Step-by-step explanation: see photo below

In 1-4 match each scatter plot to the equation that could represent the equation of its trend line. (Not all of the choices will be used)

Answers

Answer:

Please Be more specific

Step-by-step explanation:

Help please I do not get this problem at all

Answers

Answer:

It should be 4. The ratio that AC is equal to DE at should be equal to the ratio of BE to BC. If you want an explanation I'd be happy to add one!

Hi can someone help me with my math homework? I just need help with number c.

Answers

Answer:

Check pdf

Step-by-step explanation:

Answer:

11/4 pints

Step-by-step explanation:

3¹/² pints of blueberries is equal to 7/2 pints

she ate 3/4pints

7/2is equal to 14/4 because we need same denominator

now we subtract

14/4-3/4

=11/4 pints is left

omg guys imagine sneezing all day and then next thing hourssss later boom you lost your voice has that ever happened to you

Answers

Answer:

no lol

Step-by-step explanation:

Yes I know that’s happened to my mom and she’s now dead

Simplify the expression 8(5+w

Answers

Answer:

40+8w=0

8w=-40

w=-40/8

w=-5

It’s due in an hour please help

Answers

C.(-1,3) B.(0,2) A.(2,5) :)

Vector MN is comprised of the points M(8,-4) and N(-7,-2).
Find the direction angle of the vector

Answers

Answer:

22/65/53 +r 76 = 228594

Step-by-step explanation:

First 22/65/53+r 76 = 228594

What is the measure,in degrees of Angle X?Help me please I put the picture!

Answers

Answer: 22.7°

Steps:
180 - 157.3 = 22.7

NEED TO TURN IN NOW PLEASE HELP ME

Answers

Attached below...
Always happy to help!

If x = 8 units, y = 3 units, and h = 1 unit, then what is the area of the parallelogram shown above?

Answers

Answer:

8unit²

Step-by-step explanation:

The Area of a parallelogram :

Length of base * height

Length of base, x = 8 units

Height, h = 1 unit

Area = Length of base * height

Area = 8 units * 1 unit

Area = 8unit²

$13,000 for 8 years at
3.6% annual
simple
interest

Answers

$16,744.00

Link: http://www.moneychimp.com/features/simple_interest_calculator.htm

Verify that ABC ~ DEF. Find the scale factor of ABC to DEF.

Answers

Answer:

ABC and DEF are both similar triangles, this is because, the ratio of their corresponding sides are equal. The scale factor 3/2 ( Which means that each side of the triangle ABC is 3/2 times greater than each of the sides of the triangle DEF

PLEASE HELP I DONT UNDERSTAND

Answers

Answer:

112

Step-by-step explanation:

Divide 1111 By 999 and you get 1.1121121121121

So 112 is repeating over and over in the decimal.

112 is repeated 4 times and starts to repeat again.

Hope that helps!

8x−20
Apply the distributive property to factor out the greatest common factor.

Answers

Answer: 4(2x - 5)

Step-by-step explanation:

factors of 8 : (2, 2), 2

20 : (2, 2), 5

Therefore the GCF is 2*2 = 4

8x/4 = 2x and -20/4 = -5

4(2x - 5) = 8x - 20

Rhonda used unit cubes to make a rectangular prism. What is the volume of the prism? A. 14 cubic units B. 21 cubic units C. 42 cubic units D. 63 cubic units

Answers

Answer:

42 cubic units

Step-by-step explanation:

7 x 3 x 2 = 21 x 2 = 42

HELP!!!
...................

Answers

Answer:

Step-by-step explanation:

6x - 2x = 16 + 8

4x = 24

x = 6

12p^7

Please help me out!
Evaluate 3 x 2÷4y

Answers

Step-by-step explanation:

3 x 2÷4y

3/2y

hope it helps ☺️

Simplify 3^8 x 3^4/ 3^2 x3^8 . Leaving your answer in index form

Answers

Answer:

ur answer is down here in the photo thing:

Step-by-step explanation:

Activity 1 of 2
Part A: What does the 0.034 represent in this
context?
A. 3.4% interest rate
O
B. 34% interest rate
C. 0.34% interest rate
D. 0.034% interest rate
9:55 AM

Answers

Answer:

b.34% interest rate

Step-by-step explanation:

Because you can move the decimal point to the right side.

Tq.

Answer:

not 100% sure, but I think it's A) 3.4% interest rate

Step-by-step explanation:

you can move the decimal place to the right 2 times = 3.4

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