Find the axis of symmetry f(x) = 2x2 - 4x.

Answers

Answer 1

Answer:

x=1

Step-by-step explanation:

The function graph is a parabola (branches pointing up). Vertex (1; -2). The graph is symmetrical about the x axis = 1

[tex]f(x)=2x^{2} -4x \\x_{0} =-b/2a=-(-4)/(2*2)=1\\f(1)=-2\\[/tex]


Related Questions

PLEASE HELP ME IM BEGGING YOU

Answers

Answer:

A: 2x-1

Step-by-step explanation:

Graph it. if you plug in the x and y of (1,1)

1= 2(1)-1

1=2-1

correct

Answer: A

Step-by-step explanation:

Since we are given the slope, all we have to do is use the given point to find the y-intercept.

y=2x+b                 [plug in (1,1)]

1=2(1)+b                [multiply]

1=2+b                   [subtract both sides by 2]

b=-1

Now, we know the equation is y=2x-1.


simplify 1/3(6x−12)+4x

Answers

Answer:

2⋅(3x−2)

Step-by-step explanation:

This summer Paige's town will be hosting a series of 9 concerts. There are two types of seats at the concerts, which are priced at $29.50 and $43.00. Paige would like to attend at least 5 concerts and spend no more than $200. If x and y represent the number of tickets Paige purchased for the 2 types of seats, which system of inequalities could Paige use to model this situation?

Answers

Answer:

x ≥ 0

y ≥ 0

x + y ≥ 5

29.50 × x + 43.00 × y ≤ 200

= 29.50x + 43y ≤ 200

Step-by-step explanation:

From the question we are told that:

If x and y represent the number of tickets Paige purchased for the 2 types of seats, Paige would like to attend at least 5 concerts.

The inequalities that models the situation above is given as:

x ≥ 0

y ≥ 0

x + y ≥ 5

Also from the question, we were told that: There are two types of seats at the concerts, which are priced at $29.50 and $43.00. Paige would like to attend at least 5 concerts and spend no more than $200.

The inequalities that models the situation above is given as:

29.50 × x + 43.00 × y ≤ 200

29.5x + 43y ≤ 200

Therefore, the system of inequalities that could Paige use to model this situation is:

x ≥ 0

y ≥ 0

x + y ≥ 5

29.50 × x + 43.00 × y ≤ 200

= 29.5x + 43y ≤ 200

Answer:

d) x ≥0

y ≥ 0

x + y ≥ 5

29.5x + 43y ≤ 200

Step-by-step explanation:

on a coordinate grid, line segment ab has midpoint p at (4,-3). if endpoint b has coordinates of (24,16), what is the x-coordinate of point a?

Answers

Answer:  

(-16,-22)

Step-by-step explanation:

B (24,16)

Mid point (4,-3)

24 is -20 away from 4

16 is -19 away from -3

4-20=  -16

-3-19= -22


Which expression represents the perimeter of the rectangle above?
6x + 3
10x + 6
8x2 + 6x
12x + 6

Answers

Answer:

12x+6

Step-by-step explanation:

(4x+3)+(4x+3)+(2x)+(2x)

4+4+2+2=12, 3+3=6

12x+6

What is the product?
(y^2+3y+7][8y^2+y+1)

Answers

Answer:

8 y^ 4 + 25 y^ 3 + 60 y^ 2 + 10y + 7

Hope this helps!

Answer:

8 y^ 4 + 25 y^ 3 + 60 y^ 2 + 10y + 7

Step-by-step explanation:

edge 2021

Translate each phrase into an expression with integers.
Do not simplify. You'll need to use parentheses to subtract a negative number
.
a. The opposite of 6:
b. The opposite of – 6:
c. Negative six
d. 8 minus negative 8:

Answers

Answer:

  a. -6

  b. -(-6) or 6

  c. -6

  d. 8 -(-8)

Step-by-step explanation:

The opposite of something is that something preceded by a minus sign (or with its minus sign removed).

a. the opposite of 6 is -6

b. the opposite of -6 is -(-6) or 6

c. negative 6 is a description of the integer -6

d. 8 minus negative 8 is 8 - (-8)

PLEASE HELP!

Function Notation
Evaluate the following expressions give the functions below:
F(x)=4x+5 H(x)= x+ 2
g(x)=3x^2-4

1.f(5)=

2.h(-8)=

3.g(2)=

4.f(-4)=

5.h(13)=

6.g(3)=

7.f(6)=

8.h(-9)

Answers

Answer:

sorry we can't read such type of this exercise

Mr stokes placed 5 marbles in a bag. I’m looking for A,B,C,D,E

Answers

Answer:

B,C,D,E,A

Step-by-step explanation:

Btw, Mr. Stokes from RTMS?

What is not a description of slope?
rise over run
the rate of change of a line
change in y over the change in x
the ratio of horizontal change compared to vertical change

Answers

Answer:

Option (d) is wrong.

Step-by-step explanation:

Slope is:

rise over runThe rate of change of a lineChange in y over the change in xThe ratio of vertical change  to the horizontal change.

It can be given by mathematically as follows :

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\text{and}\\\\m=\dfrac{dy}{dx}[/tex]

Hence, the option which is not a description of slope is (d) "the ratio of horizontal change compared to vertical change"

Select all the sums that are positive.
A. -5 + (-2)
B. 5+(-2)
C -3 + 4
D. 0 +(-3)
E –2 +4

please help

Answers

a = -7 negative
b = 3 positive
c = 1 positive
d = -3 negative
e = 2 positive

Lilyworks for a florist. She worked 20hours last week and earned $200.00. At that rate, how much will she earn if she works for 10 hours?

Answers

Answer:

$100

Step-by-step explanation:

Answer:

$100

Step-by-step explanation:

She will earn $100 because since 20 is just 10 times 2, she will earn half as much as she did in 20 hours. 200/2 is 100.

4x + 3 in.
3(2x-5) in.

Answers

Your answer is 6x-5

The endpoints of AB¯¯¯¯¯¯¯¯ are A(9,−4) and B(5,5). Find the coordinates of the midpoint M. Coordinates of midpoint M: ( , )

Answers

Answer:

Step-by-step explanation:

(9 + 5)/2= 14/2= 7

(-4 + 5)/2= 1/2

(7, 1/2) Coordinates of Midpoint M

can someone help me cause apparently nobody knows how to do this

Answers

Answer:

do what

Step-by-step explanation:

6-4(2x-3)+10x
Show and explain work

Answers

Answer:

18+2x

Step-by-step explanation:

6-4(2x-3)+10x

6-8x+12+10x    multiply 2x-3 by -4

18+2x               combine like terms

Rosea drives her car 30 kilometers to the train
station, where she boards a train to complete her trip. The
total trip is 120 kilometers. The average speed of the train is
20 kilometers per hour faster than that of the car. At what speed
must she drive her car if the total time for the trip is less than
2.5 hours?

Answers

Answer:

>34.88km/h

Step-by-step explanation:

Because we have two unknown values in this question (speed of train and speed of car), we will need two equations to solve it.

Firstly, we can make a big equation for time in terms of the vehicle speeds. Time = distance / speed, so if we use t for the train speed and c for the car speed, we get this equation for speed:

30/c + 90/t = 2.5

Here the 30 is the distance traveled by the car in km and the 90 is the distance traveled by the train in km (120 - 30 = 90).

We also know that the train speed was 20km/h faster than the car speed so our second equation is:

c + 20 = t

So now we can substitute this in the big equation so we only have one variable to solve for:

30/c + 90/(c+20) = 2.5

Now to solve this, this first step is to get rid of the fractions, which we can do by multiplying all the terms by the lowest common factor of the two denominators which is c(c+20):

(30/c)*c(c+20) + (90/c+20)*c(c+20) = 2.5

This simplifies to:

120c+600=2.5c^2+50c

and then into the quadratic equation:

2.5c^2-70c-600=0

This can be solved with the quadratic formula or a solver/calculator, and yields the solutions:

c=−6.88, 34.88 (both to 2dp)

We can eliminate the negative solution because speed cannot be negative meaning that Rosea must drive her car at the speed of at least/greater than 34.88km/h if she wants the total trip to be less than 2.5 hours.

Hope this helped!

I want to pull all nighter and stay awake for 36 hours. If I woke up at 12 PM, and if it's currently 11:22 PM right now, then how long have I been awake?

( I actually need to know I'm pulling an all nighter to reset my sleep schedule) ​

Answers

Answer:

11 hours and 22 minutes

what is the LCM of 25 and 35

Answers

Answer:

175

Step-by-step explanation:

5x - 8x + 9 = 2x + 39​

Answers

Answer:

pliz send me the formula, only dsn I can solve your answer

The answer to your question is -6

Select all the steps that you could use to subtract a negative fraction from a positive decimal. A. Subtract the absolute value of the decimal. B. Convert both numbers into fraction form. C. Convert both numbers into decimal form. D. Add the negative number to the positive number. E. Add the opposite of the negative number to the positive number.

Answers

the answers are A, D, and E

The problem can only be easily solved if the values are either all converted to fractions or all converted to decimal.

The steps that could be used  to subtract a negative fraction from a positive decimal are;

Convert both numbers into fraction form Convert both numbers into decimal form Add the negative number to the positive number

It is important that the both values are converted either to fraction or to decimal for ease of computation.

After this step is done, the negative number can now be added to the negative number and the result is recorded.

Learn more: https://brainly.com/question/13042975

A 3-column table with 4 rows. Column 1 has entries Computer repair, sales tax, gratuity, shipping. Column 2 is labeled Store A with entries 1,200 dollars, 6 percent, 15 percent, Free. Column 3 is labeled Store B with entries 1,350 dollars, 7 percent, 15 percent, 2 percent of total price.
What is the amount of sales tax charged on the repaired computer at Store A?

Answers

Answer:

A

Step-by-step explanation:

The amount of sales tax charged on the repaired computer at Store A is 72 dollars.

We have to given that,

A 3-column table with 4 rows.

Column 1 has entries Computer repair, sales tax, gratuity, shipping.

Column 2 is labeled Store A with entries 1,200 dollars, 6 percent, 15 percent, Free.

Column 3 is labeled Store B with entries 1,350 dollars, 7 percent, 15 percent, 2 percent of total price.

Hence, For store A,

The amount of sales tax charged on the repaired computer at Store A is,

6% of 1200

= 6/100 x 1200

= 6 x 12

= 72 dollars

Therefore, the amount of sales tax charged on the repaired computer at Store A is 72 dollars.

Learn more about the percent visit:

https://brainly.com/question/24877689

#SPJ2

What is 6/11 as a decimal

Answers

Answer:

0.54

Step-by-step explanation:

6 divided by 11 is 0.54-non-terminating therefore we get 0.54

Answer:

0.5455

Step-by-step explanation:

Plz choose mine as brainliest

Sarah's parents started a savings account for her when she was 12. The plan her parents chose earns 3.2% each year, and her parents initial deposit was $3500. How much will be in Sarah's savings account after 3 years when Sarah is ready to look for a car?

Answers

Answer:

  $3846.87

Step-by-step explanation:

Assuming the interest is compounded annually, the value in 3 years is ...

  FV = P(1 +r)^t

  FV = $3500(1.032^3) ≈ $3846.87

Sarah's account will be worth about $3846.87.

Jillian solved the equation v + 4.3 = 7.05 using the work shown below. * v + 4.3 = 7.05 v + 4.3 − 4.3 = 7.05 + 4.3 v = 11.35 What error did Jillian make?

Answers

Answer:

Please check explanation

Step-by-step explanation:

Here, in this question, we are interested in identifying the error made by Jillian in his solution of the equation.

This error is traceable to the second step of his solution. Adding 4.3 to 7.05 and subtracting again is the same thing as not adding anything or just adding zero only.

What he should have done is to subtract the value of 4.3 from both sides of the equation. In that manner, he would have been able to isolate v on the left hand side of the equation

What is the slope of the line through (-7,-2) and (-6, 7)?
Choose 1 answer:
1
9
B
-9
9

Answers

Answer:

9

Step-by-step explanation:

Slope is rise over run or change y/change x.

7 - -2 = 9

-6 - -7 = 1

Slope = 9/1 or 9

___________________________________________________I AM ALWAYS HAPPY TO HELP :)

HELP ME PLEASE !!!!!!!!!

Answers

Answer:

12 units right 6 units down

4) How many km in
58,795cm?


Please help thanks!!

Answers

Step-by-step explanation:

1 km is equal to 100,000 cm.

58,795 is close to 50,000, which is half of 100,000. So our estimate would be 1/2 km to 50,000 cm.

Convert 58,795 to a decimal.

0.58795

The decimal cannot be simplified so there is

0.58795 km in 58,795 cm

Hope it helps!

-2 = 7+3v
Solve for v

Answers

-3v = 7+2. -3v=9. V=9/3. =-3. I think this is the answer Hope it helps

Answer:

[tex] - 2 - 7 = 3v[/tex]

or,

[tex] - 9 = 3v[/tex]

or,

[tex] - 9 \div 3 = v[/tex]

or,

[tex] -3 = v[/tex]

or,

[tex]v = - 3[/tex]

What is the value of x in the equation below?

6 (x minus 8) = 72

Answers

Answer:

[tex]x = 20[/tex]

Step-by-step explanation:

[tex]6(x - 8) = 72 \\ 6x - 48 = 72 \\ 6x = 120 \\ x = 20[/tex]

Answer:

The correct answer is c. 20

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