Help? @texaschic101
Parabola and its vertex

Help? @texaschic101 Parabola And Its Vertex

Answers

Answer 1
Formula is y = a(x-h)^2 + k

f (x) = a(x-4)^2 - 1

15 = a(0-4)^2 - 1

15 = a(-4)^2 - 1

15 = a(16) - 1

15 +1 = 16a

16 = 16a

16/16 = 16a/16

1 = a

A must be equal to 1

y = (x-4)^2 - 1

y = x^2 - 8x + 16 - 1

y = x^2 - 8x + 15

Factor (find two number that summed give -8 and multiplied +15)

(x-3)(x-5) = 0

(x-3) = 0 -> x = 3

(x-5) = 0 -> x = 5

So answer is: (3;0) and (5;0)

Related Questions

what is the value of the 2 in 258,364

Answers

The digit 2 in the number 258,364 stands for two hundred thousand, occupying the hundred thousands place in the place value system.

The value of the 2 in the number 258,364 represents two hundred thousand. In place value terms, this means the 2 is in the hundred thousands place. To understand this concept clearer, consider the alignment of digits in each place value when written in a column:

2 is in the hundred thousands place (200,000)

5 is in the ten thousands place (50,000)

8 is in the thousands place (8,000)

3 is in the hundreds place (300)

6 is in the tens place (60)

4 is in the ones place (4)

Therefore, the digit 2 represents 200,000.

Answer:

In the number 258,364, the 2 is in the hundred thousand's place. So, its place value is 2 * 100,000 = 200,000.

Explanation:

In the number 258,364, each digit's place value is determined by its position relative to the decimal point. The 2 is in the hundred thousand's place, representing 200,000. In whole numbers, the place values increase from right to left, with each place being 10 times the value of the place to its right. So, the hundred thousand's place has a value of 100,000. Thus, the digit 2 in this position contributes 200,000 to the total value of the number 258,364, indicating that there are 200,000 hundred thousands in it.

Question:

What is the place value of the 2 in 258,364?

Is the standard deviation of the sample a good estimate of the variation of salaries of tv personalities in​ general?

Answers

The correct answer to this would be:

“No, because the sample is not representative of the whole population.”

Since the sample values are the 10 highest annual salaries of TV personalities, they give almost no information about the salaries of TV personalities as a whole or in general. 

The standard deviation of a sample can indicate the variation in salaries of TV personalities, but may not always be accurate if the sample isn't representative or if outliers exist. The median salary is often a better measure for skewed distributions, and multiple statistics should be reported to fully describe economic data.

When considering the variation of salaries of TV personalities, the standard deviation of a sample is a crucial statistic that helps understand the dispersion around the mean salary. However, if the sample is not representative of the entire population or if there are outliers, such as extremely high salaries among TV personalities, it may not be a good estimate of the variation in general. The median salary might provide a more accurate descriptor of the central tendency, especially in a skewed distribution.

It is possible for the standard deviation to be greater than the average in cases where there is a significant spread of values, including outliers. For example, if a few TV personalities earn vastly more than others, it will increase the standard deviation. Additionally, the likelihood of the average salary of a larger group falling within a certain range is determined by the mean and standard deviation. If the distribution is normal, salaries will tend to cluster around the mean, which is why certain salary ranges are expected to be more common.

In a scenario where two companies wish to compare the average salaries of their employees, statistical tests that consider both the mean and standard deviation can help determine if there is a significant difference between the two. Similarly, when evaluating how long employees stay with a company, a study with the average time and associated standard deviation for each company would provide insight into retention rates.

When reporting salaries or any economic data, it is often wise to report multiple measures of central tendency and dispersion, such as the mean, median, and standard deviation, to provide a comprehensive view. This approach takes into account the full range of values, including any potential outliers or skewness in the distribution.

Find the indicated probability. round to three decimal places. a test consists of 10

a. True

b. False questions. to pass the test a student must answer at least 6 questions correctly. if a student guesses on each question, what is the probability that the student will pass the test?

Answers

To answer this problem, we use the binomial distribution formula for probability:

P (x) = [n! / (n-x)! x!] p^x q^(n-x)

Where,

n = the total number of test questions = 10

x = the total number of test questions to pass =   >6

p = probability of success = 0.5

q = probability of failure = 0.5

Given the formula, let us calculate for the probabilities that the student will get at least 6 correct questions by guessing.

P (6) = [10! / (4)! 6!] (0.5)^6 0.5^(4) = 0.205078

P (7) = [10! / (3)! 7!] (0.5)^7 0.5^(3) = 0.117188

P (8) = [10! / (2)! 8!] (0.5)^8 0.5^(2) = 0.043945

P (9) = [10! / (1)! 9!] (0.5)^9 0.5^(1) = 0.009766

P (10) = [10! / (0)! 10!] (0.5)^10 0.5^(0) = 0.000977

Total Probability = 0.376953 = 0.38 = 38%

There is a 38% chance the student will pass.

The solution to the system of equation below is (-2,-1).
2x - 3y =-1
11x - 9y =-13

When the first equation is multiplied by -3 the sum of the two equations is equivalent to 5x= -10

Which system of equations will also have a solution of (-2,-1)

Answers

its the first one
Plugging in x = -2 and y = -1:-
5(-2) = -10
11(-2) - (9)-1) = -22 + 9 = -13

Answer:

A

Step-by-step explanation:

edge 2020 Dec 14

What are the coordinates of the vertices of ABC? Use the coordinates to find the lengths of ab and . bc

Answers

The triangle shown is a Pythagorean triple with lengths of 3-4-5.
AC = 3
AB = 4
BC = 5

The coordinates of the vertices of the triangle are A ( 2 , 2 ) , B ( 6 , 2 ) and C ( 2 , -1 )

What is a Triangle?

A triangle is a plane figure or polygon with three sides and three angles.

A Triangle has three vertices and the sum of the interior angles add up to 180°

Let the Triangle be ΔABC , such that

∠A + ∠B + ∠C = 180°

The area of the triangle = ( 1/2 ) x Length x Base

For a right angle triangle

From the Pythagoras Theorem , The hypotenuse² = base² + height²

if a² + b² = c² , it is a right triangle

if a² + b² < c² , it is an obtuse triangle

if a² + b² > c² , it is an acute triangle

Given data ,

Let the triangle be represented as ΔABC

Now , the coordinates of the triangle are

A ( 2 , 2 ) , B ( 6 , 2 ) and C ( 2 , -1 )

And , length of AB is given by the distance formula .

Distance D = √ ( x₂ - x₁ )² + ( y₂ - y₁ )²

AB = √ ( 16 + 0 ) = 4 units

BC = √ ( 16 + 9 ) = 5 units

Hence , the lengths of AB and BC are 4 and 5 units respectively

To learn more about triangles click :

https://brainly.com/question/16739377

#SPJ3

There is a state soccer tournament with 128 teams competing for 1st place. Each week, half of the teams get eliminated. How many teams remain after 6 weeks?
A.
16
B.
8
C.
4
D.
2

Answers

The answer is D.
Week 0 (start; initial): 128 TEAMS
Week 1: 64 teams
Week 2: 32 teams
Week 3: 16 teams
Week 4: 8 teams
Week 5: 4 teams
Week 6: 2 teams

You can also solve for this using a common ratio.
[tex]\text{Let A denote the number of teams after n weeks}[/tex]

[tex]A_0 = 128[/tex]
[tex]A_1 = A_0(0.5) = 128(0.5)[/tex]
[tex]A_2 = A_1(0.5) = 128(0.5)^{2}[/tex]
[tex]A_3 = A_2(0.5) = 128(0.5)^{3}[/tex]

[tex]A_n = 128(0.5)^{n}[/tex]
[tex]A_6 = 128(0.5)^{6} = 2[/tex]

Thus, after 6 weeks, there will only be 2 teams left.

Find the distance between B and E. Simplify completely.

Answers

B is (-3,2) E is (4,-2)

 

4-(-3) = 4+3 =47

-2 -2 = -4

 

7^2 = 49

-4^2 = 16

Sqrt( 49+16)

Sqrt(65) = 8.062

 Round off to 8


last one help. Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number.


A. 645 m2; 812 m2
B. 668 m2  ; 704m2
C. 645 m2; 740 m2
D. 668 m2; 740 m2

Answers

The formula for finding the lateral area for a triangular prism is
[tex] A_{L} = (a + b + c )h[/tex]

So put in the values and you get

[tex] A_{L} = (12.04 + 9 + 8 )23[/tex]
[tex] A_{L} = 668[/tex]

The formula for finding the surface area of a triangular prism is
SA = bh + (s1 + s2 + s3)H

So put in all the values and you get

SA = 9(8) + (9 + 8 + 12.04)23
SA = 740

Hope this helps! :)

The image is the result of an isometric transformation of its pre-image because _____.
a reflection has occurred
a rotation has occurred
the two triangles are congruent
a dilation has occurred

Answers

They gave you the lengths showing each side of the original triangle is congruent to each side of the new triangle. There is no information to show if the triangle was rotated or reflected, so although it is possible that it was, we can't really tell. All we know is the triangles are congruent.  
The two triangles are congruent. 

In mostar, bosnia, the ultimate test of a young man's courage once was to jump off a 400-year-old bridge (now destroyed) into the river neretva, 23 m below the bridge. (a) how long did the jump last?

Answers

To solve this problem, we must assume that the man undergoes constant acceleration as he goes down the river (therefore no other forces must act on him except gravity). Therefore we can use the formula below to calculate for the duration of his fall:

y = y0 + v0 t + 0.5 a t^2

where y is the distance and y0 = 0 since we set the reference point at the bridge, v0 is the initial velocity and is also equal to v0 = 0 since the man started from rest, therefore the equation becomes:

y = 0 + 0 t + 0.5 a t^2

y = 0.5 a t^2

Rewriting in terms of t:

t^2 = 2 y / a

t = sqrt (2y / a)

a is acceleration due to gravity = 9.8 m/s^2

t = sqrt [2 * 23 / 9.8]

t = 2.17 s

 

Therefore the jump last only about 2.17 seconds.

The graph of a linear equation may not be a straight line.

A. True
B. False

Answers

Hi, false for sure! 

-Stormie
The answer is false

If i have 1 cookie and my buddy has another cookie and i steal his cookie.. how many cookies do i have?

Answers

2 cookies. cux 1 + 1= 2. 
you had one cookie (1)
your stolen cookie from buddy (1)
 total =2
Final answer:

The mathematics problem set with cookies deals with basic addition: if you have 1 cookie and you take another from a friend, you have a sum of 2 cookies.

Explanation:

The subject here is basic arithmetic, a branch of mathematics.

If you start with 1 cookie (your own), and then you take || 'steal' || another cookie from your friend, you are basically adding that 1 cookie to the 1 cookie you already have. So, 1 cookie (yours) + 1 cookie (your friend's) = 2 cookies. Hence, you would have 2 cookies.

Remember, in real life, it's not nice to steal. This is just a math problem to help you understand the concept of addition.

Learn more about Addition here:

https://brainly.com/question/40265821

#SPJ12

What is the number 212three in base-two form?

Answers

The correct answer is: B. 10111

To convert the number [tex]\(212_{\text{three}}\)[/tex] to base-two (binary) form, we need to first convert it to base-ten and then convert the base-ten number to base-two.

[tex]\(212_{\text{three}}\)[/tex] in base-ten:

[tex]\[ 212_{\text{three}} = 2 \cdot 3^2 + 1 \cdot 3^1 + 2 \cdot 3^0 = 18 + 3 + 2 = 23_{10} \][/tex]

Now, we convert [tex]\(23_{10}\)[/tex] to base-two:

[tex]\[ 23_{10} = 16 + 4 + 2 + 1 = 2^4 + 2^2 + 2^1 + 2^0 = 10111_{2} \][/tex]

Final answer:

The number 212 in base three (212three) converts to 17 in decimal, which is represented as 10001 in binary notation (base-two).

Explanation:

The number 212 in base three (2123) needs to be converted into base-two form (binary). Converting from base three to base two requires understanding each digit's place value in base three and then converting that to binary. Starting from the rightmost digit to the left, we have:

The units place (30), with a value of 2The threes place (31), also with a value of 2The nines place (32), with a value of 1

So, we have:

2123 = (1 × 32) + (2 × 31) + (2 × 30)

2123 = (1 × 9) + (2 × 3) + (2 × 1)

2123 = 9 + 6 + 2 = 17 in decimal.

Now we need to find the binary representation of 17:

17 divided by 2 is 8 with remainder 1 (20)8 divided by 2 is 4 with remainder 0 (21)4 divided by 2 is 2 with remainder 0 (22)2 divided by 2 is 1 with remainder 0 (23)1 divided by 2 is 0 with remainder 1 (24)

So, the binary equivalent is 1(24)0(23)0(22)0(21)1(20), which is 100012.

I spent 20% of my weekly income on food. What was my weekly income if I spent $186 ?

Answers

20%=186
hmm
percent means parts out of 100
20%=20/100=2/10=1/5

and 'of' means multipoly

20% of income=186
1/5 times income=186
times both sides by 5/1
income=930

weekly income was $930

If I spent $186. Then my weekly income will be $930.

What is the percentage?

The quantity of anything is stated as though it were a fraction of a hundred.

I spent 20% of my weekly income on food.

If I spent $186.

Then my weekly income will be

Let x my weekly income.

0.2x = $186

     x = $930

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ5

what is the solution to -1 -7 ?

Answers

-7-1 = -8
When you see a negative minus a negative, pretend both negatives are positive and just add them.
the answer is negative 8. because if you already owed someone 1 dollar and then borrowed 7 more then u would owe them 8 right? so you have -8

Triangle PQR has vertices P(–2, 6), Q(–8, 4), and R(1, –2). It is translated according to the rule (x, y) → (x – 2, y – 16).

What is the y-value of P'?

Answers

The y-value is the one on the right. Therefore, the y-value of P is 6. Following the rule, the y-value of P' is 6-16= -10.
P(–2, 6)

translated according to the rule (x, y) → (x – 2, y – 16)

P' will be:
P'(–4, -10)

So y value will be - 10

hope it helps

Find the area





A. 54 in


B. 36 in


C. 18 in


D. 324 in


(In pie)

Answers

area of a circle = pi r^2

radius = 18

 so R62 = 18^2 = 324

 since you want the answer in pi it would be 324PI

 so the answer is 324

A circle with a radius of 18 inches has an area of 1,017.88 square inches, so here is what I did to get the final answer. A = πr2 where pi is the ratio of the circumference of a circle to its diameter and r is the radius. π = 3.1416 So then A = π182 = 324π = 1017.88 in2 (2dp)
So the Answer you want would be D. 324in

A test consists of 10 problems and students are told to answer any 4 of these questions. In how many different ways can they choose the 4 questions?

Answers

In this item, it is not given that there has to be specific arrangement or order as to how the questions are going to be answered. Hence, the concept that can be used in order to answer this item is the concept of combination which states that, 
            nCr = n! / (r!)(n - r)!

This is read as "combination of n taken r". In this item, n = 10 and r = 4. Substituting the known vaues to the equation,
          10C4 = (10!) / (4!)(10 - 4)!
          10C4 = 210

Therefore, the number of which is which the questions can be answered is 210. 

the fraction 1/9 produces a repeating decimal 0.1 ? true or false

Answers

The answer is true. 1/9 = 0.111111......
Hello.

[tex]1.9 = 0.11111111[/tex]

So yes, 1/9 produces a repeating decimal 0.1...

2.31x-4.52/7.54-11.32=6.21

Answers

2.31x - 4.52/7.54 - 11.32 = 6.21  

Answer : 7.85

The bear population increases at a rate of 2% each year. There are 1573 bears this year. Which function models the bear population?

Answers

1573^.02t if 1573 is the original bear population

The solution is, the growth factor b is, 1.02

What is  multiplication?

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

Using the formula:

P = P0(1+r)^t

where

P0 is the initial population

r is the rate in decimal

b = 1+r is the growth factor

t is the time in years.

As per the statement:

the bear population increases at a rate of 2% each year there are 1573 bears this year,

⇒P0 = 1573,

r = 2% = 0.02

then;

solving using the formula,

we get,

⇒ b = 1.02

Therefore, the growth factor b is, 1.02.

To learn more on multiplication click:

brainly.com/question/5992872

#SPJ3

One eighth of the students in the seventh grade are in the school band there are fourty four students in the school band find the number of students in the seventh grade

Answers

If 1/8 = 44..what would 8/8 =?
1/8x = 44...1/8 of the total students = 44
x = 44 * 8
x = 352 total 7th grade students <===

Battery was charged. when the charging began it was 23% full after 30 minutes of charging the battery was 89% full. how fast was the battery charged? How long did it take the battery to be funny charged?

Answers

The battery was charged at a rate of 2.2 percent per minute.It took the battery 35 minutes to be fully charged.

Answer:

The battery was charged at a rate of 2.2 % per minute.

It took 35 minutes to fully charge the battery

Step-by-step explanation:

Initial amount of charge = 23%

Charge after 30 minutes = 89%

Percentage of charge gained in 30 minutes = 89-23

                                                                         = 66 %

Charging speed of battery = [tex]\frac{percentage\hspace{3}of\hspace{3}charge\hspace{3}gained}{time\hspace{3}taken\hspace{3}in\hspace{3}minutes}[/tex]

= [tex]\frac{66}{30}[/tex]

= 2.2 % per minute

2.2% charge takes 1 minutes

1% charge takes [tex]\frac{1}{2.2}[/tex] minutes

Initially it was 23% charged so it needs 77% more charge to be fully charged.

So, 77% charge takes [tex]\frac{1}{2.2}*77[/tex] minutes    

                         =  [tex]\frac{100}{2.2}[/tex] minutes

                         = 35 minutes

In the triangle below, what ratio is cos θ?

Answers

5:13 since cos is adjacent over the hypotenuse.

Answer:

[tex]cos(theta)=\frac{5}{13}[/tex]

Ratio is 5:13

Step-by-step explanation:

We are given with right angle triangle with side lengths

cos theta ratio is adjacent side divide by hypotenuse

In the triangle , adjacent side for theta is 5  and hypotenuse is 13

[tex]cos(theta)=\frac{adjacent}{hypotenuse}[/tex]

[tex]cos(theta)=\frac{5}{13}[/tex]

Find the measure of the central angle with a radius of 18 inches and the area of a sector measuring 40.5π square inches.

Answers

[tex]\text{Area of sector}= \cfrac{\theta \pi r^2}{360^o} \ \ \ \ \ \text{[when r is a radius, } \theta \text{ is the central angle]} \\ \\ 40.5 \pi = \cfrac{\theta* \pi* 18^2}{360^o} \ \to \ 14580 \pi = \theta* \pi* 324 \ \to \ \\ \\ \theta= \cfrac{14580 \pi }{324 \pi }= 45^o[/tex]

Hello!


Can I get some help with that question please. I don't think I did it right, sadly.


Thank you!

Don't forget to show your work and give as much details possible.

Answers

Let O be the point of intersection of diagonals.

Consider triangles FOE and EOD:
FO = OD,  ∠FOE = ∠EOD  and OE is a common side  ⇒ 
triangles FOE and EOD are congruent.

In congruent triangles all corresponding sides and are congruent  ⇒
EF = DE = 6

How many of each position fantasy football?

Answers

The number of  players to draft at each position is up to you, but the traditional combination of players to draft are 2 quarterbacks, 4 running backs, 4 wide receivers, 2 tight ends, 2 kickers, and 2 defense/special teams units.
Final answer:

In standard fantasy football, each team incorporates a variety of positions including a Quarterback, Running Backs, Wide Receivers, a Tight End, a Flex, Defense/Special Teams, a Kicker and bench spots.

Explanation:

In standard fantasy football, each team is composed of a variety of positions: 1 Quarterback (QB), 2 Running Backs (RB), 2 Wide Receivers (WR), 1 Tight End (TE), 1 Flex (which can be a RB, WR, or TE), 1 Defense/Special Teams (DST), and 1 Kicker (K). In most cases, you also have bench spots for subs or injured players, usually 6-7. These numbers can vary depending on the rules of your fantasy league.

Learn more about Fantasy Football here:

https://brainly.com/question/4455398

#SPJ12

Show me how to make 33 in four different ways

Answers

30+3
11*3
10*3+3
60-30+3

(sorry if these didn't help i'm a beginner and i'm in 7th grade)


wxyz is a rectangle, what is zx

Answers

ZX is a diagonal line from corner to corner.

the midpoint formula

On a certain marathon course a runner reaches a big hill that is at least 10 miles into the race. If a total marathon is 26.2 miles, how can u find the number of miles the runner still has to go?

Answers

marathon = 26.2

hill is at least 10

26.2-10=16.2

X=  miles left

X<=16.2

Other Questions
[07.01]When ammonia, NH3, dissolves in water, hydrogen ions are transferred from the water to ammonia to form ammonium ions and hydroxide ions. This reaction can be seen below: H2O (l) + NH3 (aq) OH- (aq) + NH4+ (aq) Which of the following helps to explain why ammonia is a base? Life expectancy in the united states has increased by _____ years during the twentieth century. What are your limitations as a person ? what are things that you consider as difficult or hard for you to accomplish or believe in The trait theory that explains personality in terms of openness, conscientiousness, extroversion, agreeableness, and neuroticism is called the _____. What is the geometric mean of 21 and 54? which Lizzie Bright and the Buckminster Boy.This excerpt highlights the conflict between I need some more help plz Calculate the [OH] if the hydrogen ion concentration is 3.64 x 108 M. WILL GIVE BRAINLIEST!! PLEASE HELP!!Given the parent function of y=the square root of x, state the type of transformation that occured to get the function y=negative square root of x.A.vertical shrinkB.vertical stretchC.reflection over the x-axisD.reflection over the y-axis Why was there a general breakdown in political order between 8th and 3rd centuryb.c.e.? Seed-bearing plants differ from all other plants in that Study the figure below and predict which of the following components would best indicate the overall biotic health of an aquatic ecosystem? A.) Particulate amounts B.) Sedimentation rates C.) Species abundance D.) Water quality Question 38 (Essay Worth 3 points) Cmo se dice I like holidays. en espaol? When entering your answers for fill in the blank and essay questions, please be sure to use accent marks and/or correct punctuation to avoid your answer being marked incorrect. You may copy and paste the accented character or punctuation mark from this list if needed: order the group of quadratic functions from widest to narrowest graphy=-7x^2y=-1/5x^2y=-1/3x^2 The national research center suggests ____________ as the mark for evaluating the effectiveness of an intervention and making necessary adjustments. Consider the heating curve. In which region are most particles moving the fastest?A) 2B) 3C) 4D) 5 After the British government suppressed the Sepoy Rebellion India became a direct colony of Britain in What is a perfect cube and how can you check if a given number is a perfect cube? Explain why. Find the remaining sides of a 45-45-90 triangle if the longest side is 20. A bag has five red marbles, six blue marbles, and four black marbles. What is the probability of picking a blue marble, replacing it, and then picking another blue marble? a)1/15b)8/75c)4/25d)1/9 Steam Workshop Downloader