A quadratic function has one root at 5 and has a vertex point at (7, 2).
What is the value of “a”?

Answers

Answer 1
ExplanationVertex Form

[tex]y = a {(x - h)}^{2} + k[/tex]

where a-term determines the shape of graph.

h-term determines the change of graph for x-axis.

k-term determines the change of graph for y-axis.

Vertex of the graph is at (h,k).

Substitute the vertex value in the equation.

[tex]y = a {(x - 7)}^{2} + 2[/tex]

We need to find the value of a-term. We have the given root which we can substitute in the equation.

Also the roots are on x-axis, meaning that the y-value for roots must be 0.

Substitute (5,0) in the equation.

[tex]0 =a {(5 - 7)}^{2} + 2 \\ 0 =a {( - 2)} ^{2} + 2 \\ 0 = 4a + 2[/tex]

Solve for a-term.

[tex]4a + 2 = 0 \\ 4a = - 2 \\ a = \frac{ - 2}{4} \\ a = - \frac{1}{2} [/tex]

Therefore the value of a is - 1/2. Rewrite the equation as we get the answer.

Answer

[tex] \large \boxed{y = - \frac{1}{2} {(x - 7)}^{2} + 2}[/tex]


Related Questions

Can someone plz help me :( !!

Answers

Answer:

123

Step-by-step explanation:

hope this helps

Answer:

option.d 123°

DETAILED EXPLANATION:

angle JIK+ angle IJ L= 1 80 ( By CO Interior angle )

57° + angle IJL= 180°

angle IJ L = 1 80°-57°

angle IJL=123°

What is the value of -2(x + 3)

Answers

answer:

2x+6 period

A landscaper is constructing a rectangular garden with an area of 108 square feet. He draws the garden on paper and represents the length as and the width as (x-1) . Find the length and the width of the garden(x-4). Select all that apply
7 feet
8 feet
9 feet
12 feet
13feet

plssss help

Answers

The length and width of the garden is 12 feet and 9 feet respectively.

Given that, length of garden [tex]=(x-1)[/tex]

Width of garden [tex]=(x-4)[/tex]

Area of garden is 108 square feet.

      [tex]Area=length*width\\\\108=(x-1)*(x-4)\\\\x^{2} -5x+4=108\\\\x^{2} -5x-104=0\\\\x^{2} -13x+8x-104=0\\\\x(x-13)+8(x-13)=0\\\\(x-13)(x+8)=0\\\\x=13,x=-8[/tex]

Since, side can not be negative.

So we will consider, [tex]x=13[/tex]

Length[tex]=x-1=13-1=12feet[/tex]

Width[tex]=(x-4)=13-4=9feet[/tex]

Learn more:

https://brainly.com/question/21067938

if the original price is $40 and the discount price is $25, what is the percent discount?

Answers

Answer:

i think its 62.5%

Step-by-step explanation:

have a good day :)

Answer:

37.5%

Step-by-step explanation:

Ok I always do these problems in a weird way cuz im autistic but here's my process...

10% of 40 is 4

5% of 40 is 2

2.5% of 40 is 1

4 goes in to 25 6 times

4x6=24

which is one less than 25

so there's six 10%s which is 60%

plus the extra 2.5%

so it's 62.5%

so the item is 37.5% off...

Two cars leave at the same time from two cities that are 374 miles apart
and travel towards each other. Car 1 travels 50mph and Car 2 travels 60mph. How
long do they travel before they meet?

Answers

Answer:

They travel for 3.4 hours before they meet.

Step-by-step explanation:

Given that:

Distance between the cities = 374 miles

Speed of Car 1 = 50 mph

Speed of Car 2 = 60 mph

As the cars are moving towards each other,

Combined speed = 50 + 60 = 110 mph

We know that:

Distance = Speed * Time

374 = 110 * Time

Time = [tex]\frac{374}{110}[/tex]

Time = 3.4 hours

Hence,

They travel for 3.4 hours before they meet.

help this is frustrating

Answers

Answer:

kmijopijoijojoji

Step-by-step explanation:

Answer:

52 flowers

Step-by-step explanation:

We can observe the pattern:

1. ⇒ 2*2 + 1*0 = 42. ⇒ 3*2 + 2*2 = 103. ⇒ 4*2 + 3*4 = 204. ⇒ 5*2 + 4*6 = 345. ⇒ 6*2 + 5*8 = 52...n. ⇒ 2(n +1) + n(2n - 2) = 2n² + 2

Plz, help me thank you I really need it :)

Answers

Answer:

D and B

Step-by-step explanation:

HELP PLS ITS DUE IN AN HOUR

Answers

Answer:

MP7

Step-by-step explanation:

Answer:

6 < sqrt(41) <7

Step-by-step explanation:

6^2 = 36; 36 < 41

7^2 = 49; 49>41

can someone answer my last question please i will give brainly for correct answer
https://brainly.com/question/20746225

Answers

Answer:

its 32

Step-by-step explanation:

Trust me

What is the slope? (IXL)

Answers

Answer:

5/3

Step-by-step explanation:

Leila (y) is 3 years older than her sister Joan (x). The equation x+3=y
gives Leila's age. What is the dependent variable?

Answers

Answer:

y

Step-by-step explanation:

The value of y is dependent on the value of x+3 because y represents leilas age.

Answer

3x+y

Step-by-step explanation:

Please help giving 20 points thank you

Answers

Answer:

B

Step-by-step explanation:

plzz help 15 points.. .. . . ​

Answers

Answer:no solution

Step-by-step explanation:

Answer: No solution

help please! :(

"To estimate the height of a tree, Tia and Felix walk away from the tree until the angle of sight with the top and bottom of the tree is a right angle. Let h represent the height of a person's eyes and d represent the distance away from the tree. Answer parts a to c below."
(multiple parts, but only a is showing rn)

a. If the height of Tia's eyes is 1.6 m and her distance away from the tree is 2.5 m, what is the height of the tree?
The height of the tree is about ___ meters/square meters.
(insert #, then choose one).
(Type an integer or decimal rounded to the nearest hundredth as needed.)​

Answers

Answer:

5.51 meters

Step-by-step explanation:

2 times the radius equals the....

Answers

Answer:

diameter

Step-by-step explanation:

double the radius is the diameter

The perez family is researching the cost of keeping their dog at a kennel during an upcoming vacation . The local kennel allows "Siler" families to pay a rate of $36 per day. for a fee, families can buy a "Gold" membership and will be allowed to board their dogs at a discounted rate as shown in the table. What is the cost of a Gold membership?

Answers

Answer:

it is $50

Step-by-step explanation:

i did the quiz

What is 10 as a percentage

Answers

10 as a percentage is 10%

Which is the solution to the equation? 9 =n+3

Answers

Answer:

n=6

Step-by-step explanation:

9=n+3

n+3=9

n+3-3=9-3

n=6

-n=3+9
-n=-6
n=6
Hehehehehehehehehheheheheheehhehehe

find
[tex]x + y + z[/tex]
[tex]x = 70 digree [/tex]
[tex]z = 40digree[/tex]
[tex]find y[/tex]

Answers

Answer:

x = 110

y = 110

Step-by-step explanation:

Here, we are going to apply an important triangle property

The sum of opposite interior angles equal the exterior angle of the third side

Thus, we have that;

y = 70 + 40 = 110

As we can see, the third angle in the triangle will be;

180-70-40 = 110

This is because sum of angles = 180

Thus, applying the exterior angle relationship,

x = 70 + 40 = 110

There are 4 consecutive odd integers that sum to 344. Which integers are they?

Answers

Answer:

The consecutive odd integers are 83, 85, 87 and 89.

Step-by-step explanation:

x + (x + 2) + (x + 4) + (x + 6) = 344

4x + 12 = 344

4x = 344 - 12

4x = 332

x = 332/4

x = 83

x + 2 = 85

x + 4 = 87

x + 6 = 89

Hope this helps

PLEASE HELP ILL GIVE BRAINLYEST ANSWER
1. Derek must wear a uniform at the school he attends. His shirts
come in the colors blue, white, yellow, and black. Derek can wear
shorts or pants with his uniform. Both the shorts and pants come
in the colors blue, black, and tan
List the sample space for the different outfits Derek can make
from his uniform choices for school
How many total combinations are there?
If Derek randomly picks a shirt, what is the probability, written as
a fraction, decimal and percent that he will pick a yellow shirt?

Answers

Yellow shirt probability is 1/4, 0.25 and 25%

312.4 308.6
Find the domain
And i will give brainliest

Answers

Answer:

What is the function

Step-by-step explanation:

Answer:

what???

Step-by-step explanation:

Please help me with 1, 2, 3, and 4. Please.

Answers

Answer:

on the picture

hope it's helpful ❤❤❤

THANK YOU

you would 'b' be in '-20= -8(4)+b'

Answers

It’s -11 becuase i just took the test and got it

Divide 64 bundles of newspapers into two groups so the ratio is 3 to 5.

Answers

Answer:

24 newspapers

40 newspapers

Step-by-step explanation:

the sum of ratios = 3 + 5 = 8

total newspapers in the first group = [tex]\frac{3}{8}[/tex] x 64 = 24 newspapers

total newspapers in the second group = [tex]\frac{5}{8}[/tex] x64 = 40 newspapers

What is this number in standard form?

(8×10)+(2×1100)+(9×11,000)

Answers

Answer:80.029

Step-by-step explanation:

lul JAJAJAJJAJAJKJSAHDKJHWAKJSHD

Answers

Answer:

ksjajajajakkkakakaakakkajjjjjj

the logo shown has a total area of 125cm^2 and the square has a side length of 5cm. Calculate the width of the logo

Answers

Answer:

25cm

Step-by-step explanation:

To find the width, multiply the length that you have been given by 2, and subtract the result from the perimeter. You now have the total length for the remaining 2 sides. This number divided by 2 is the width.

Tbh I don’t know and I hope someone gives you the answer

Alex determined that his average speed when he commuted to work is 35 miles per hour. What conversion factor can
be used to convert this speed to feet per hour?
1 mile
O 5,280 feet
o
1 hour
5,280 feet
O
5,280 feet
1 mile
O
5,280 feet
1 hour

Answers

Answer:

The Answer is C= 5,280 feet Over 1 mile

Step-by-step explanation:

There you go

Answer:

The Answer is C= 5,280 feet Over 1 mile

Step-by-step explanation:

cause i got itt on edge and it was a exam so like

and i got 100

2021 edge

Evaluate:
-48 + 9 - 18
Ik what the answer is
I will just give you hella points

Answers

Answer: -57

Step-by-step explanation: -48 + (9 - 18) -48 + -9 = -57

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