mohon bantuannya The picture is a graph of quadratic function......
1. mohon bantuannya The picture is a graph of quadratic function......
Persamaan umum fungsi kuadrat :
f(x) = Ax² + Bx + C
Diketahui grafik fungsi f(x) melewati titik :
» (3 , 0)
=> f(3) = 0
=> A.(3)² + B.(3) + C = 0
=> 9A + 3B + C = 0 ( i )
» (–1 , 0)
=> f(–1) = 0
=> A.(–1)² + B.(–1) + C = 0
=> A - B + C = 0 ( ii )
» (0 , 3)
=> f(0) = 3
=> A.(0)² + B.(0) + C = 3
=> C = 3
Subtitusikan nilai C ke ( i ) :
9A + 3B + C = 0
9A + 3B + 3 = 0
9A + 3B = –3 ( iii )
Subtitusikan nilai C ke ( ii ) :
A - B + C = 0
A - B + 3 = 0
A - B = –3 ( iv )
Eliminasi ( iii ) dan ( iv ) :
( iii ) : 9A + 3B = –3
(iv) × 3 : 3A - 3B = –9
________________ +
12A = –12 => A = –1
Subtitusikan nilai A ke ( iv ) :
A - B = –3
–1 - B = –3 => B = 2
Substitusikan nilai A, B, dan C ke persamaan fungsi kuadrat :
f(x) = Ax² + Bx + C
f(x) = (–1)x² + (2)x + (3)
Jadi, persamaan fungsi kuadrat grafik tersebut adalah : f(x)=–x²+2x+3
2. Diagram 5 shows the graph of a quadratic function y = f(x)
a. y = 21+4x-x²
0 = 21+4x-x²
0 = (7-x)(3+x)
x = 7 atau x = -3
b. mencari sumbu simetri di turunan pertama:
y = 21+4x-x²
y' = 4 - 2x ; subtitusi y' = 0 (karena pada titik puncak, m=0)
0 = 4 - 2x
2x = 4
x = 2 ← sumbu simetri
3. What is the area of the triangle shown below
a = 5
b = 5
c = 8
Keliling
= a + b + c
= 5 + 5 + 8
= 18
s = 1/2 x keliling
s = 1/2 x 18
s = 9
Luas
= √(s(s - a)(s - b)(s - c))
= √(9(9 - 5)(9 - 5)(9 - 8))
= √(9 x 4 x 4 x 1)
= √144
= 12 satuan luas
4. 3. answer the questions below based on the texta. how is the bikeb. what is the function of the basket
1, How is the bike? (What is that question?)
It's good (I think i don't get it)
2, It's for mum to carry groceries
Sorry if it's wrong
5. II. Learn the example and write the function of the things below carefully!Example:A: What is the function of plate?B: Its function is to serve some food.1.2.3.&
Jawaban:
Arti dari soal di atas adalah
Pelajari contoh dan tuliskan fungsi dari benda-benda di bawah ini dengan hati-hati!
Contoh:
A: Apa fungsi dari piring?
B: Fungsinya adalah untuk menyajikan makanan.
Penjelasan:
Karena pada soal tidak dilampirkan benda apa saja yang dituliskan fungsinya, berikut hanyalah contoh saja.
A: What is the function of knife?
B: Its function is to cut something.
A: What is the function of glass?
B: Its function is to drink.
A: What is the function of kettle?
B: Its function is to boil the water.
A: What is the function of rice cooker?
B: Its function is to cook the rice.
Pelajari lebih lanjut things in the kitchen pada https://brainly.co.id/tugas/13887778
#BelajarBersamaBrainly
6. earn the example and write the function of the things below carefully!kample:A: What is the function of plate?B : Its function is to serve some food.2.3.
Jawaban:
dapatkan contoh dan tuliskan fungsi dari hal-hal di bawah ini dengan hati-hati!
contoh:
A: Apa fungsi plat?
B: Fungsinya untuk menyajikan makanan.
7. i) the inverse of a function can exists if, and only if, the function f (x) is a one-one mappingii) the domain of f (x) is the domain if f^-1(x)iii) the graph f (x) & f^-1(x) are reflections of each other in the line y=xwhich statement is true?
Subject Function
Statement (i) is wrong. The correct one is that the inverse of the function exists if and only if the function mentioned is bijective function (one-to-one correspondence)
Statement (ii) is wrong. The domain of f(x) is the codomain of [tex] f^{-1}(x) [/tex]
Statement (iii) is wrong.
[tex] f(x) = x \Rightarrow f^{-1}(x)= x [/tex], while y = x and x = y is the same precise equation. The lines are conjoined and hence don't imply what the reflection means.
8. Data were collected on the fiber diameter and the fleece weight of wool taken from a sample of 20 sheep. the data are shown in the following graphs. graph 1 is a scatterplot of fleece weight versus fiber diameter with the respective least-squares regression line shown. graph 2 is the associated plot of the residuals versus the predicted values.
Penjelasan dengan langkah-langkah:
Pengambilan data diameter serat dan berat bulu domba diambil dari sampel sebanyak 20 ekor domba. data tersebut disajikan dalam grafik berikut. grafik 1 adalah sebaran berat bulu domba versus diameter serat dengan masing-masing garis regresi kuadrat terkecil ditampilkan. grafik 2 adalah plot terkait dari residu versus nilai yang diprediksi
9. What is the function of a park?A: What is the function of a restaurant?What is the function of a bank?A: What is the function of a jail?NADE MEDiWhat is the function of athe function of a brary?AWhat is the function or a no
Function of:
Park: A park is an area of natural, semi-natural or planted space set aside for human enjoyment and recreation or for the protection of wildlife or natural habitats. Restaurant: a place where people pay to sit and eat meals that are cooked and served on the premises.Bank: bank is used to save money of some people. many people save money because in bank their money is save well stored.Jail: Jails are an indispensable part of our criminal justice system. They serve many different roles. As you know, jails hold inmates while they await charges, trial or sentencing.Library: to show and can read many books as you can as you want and as you strong.10. Tolong jawab ya 1 what is the function ofc a park 2 what is the function of a bank 3 what is the function of a library 4 what is the function of a restaurant 5 what is the function of a jail 6 what is the function of a hospital
1. A park is a place to play together with friends or family
2. The function of bank is to save our money
3. The library is full of books. The function of library is to read many book
4. The function of restaurant is to eat some food
5. The jail is a place for the prisoner
6. The hospital is a place of a patient
11. A figure is made up of a rectangle and a semicircle as shown in the diagram below. what is the area of the figure?
Jawab:
Area itu bahasa inggris dari Luas, maka
Area of square = S x S
= 7 x 7
= 49 cm²
Radius = Diameter / 2
= 7 / 2
= 3.5 cm
Area of [tex]\frac{1}{2}[/tex] circle = [tex]\frac{1}{2}[/tex] x [tex]\pi[/tex] x r²
= [tex]\frac{1}{2}[/tex] x [tex]\frac{22}{7}[/tex] x 3.5²
= 19.25 cm²
Are of the figure = 49 + 19.25 = 68.25 cm²
Penjelasan:
phi [tex](\pi )[/tex] untuk [tex]\frac{22}{7}[/tex] digunakan apabila jari-jari/radius berkelipatan 7, sedangkan
phi untuk 3.14 digunakan apabila jari-jari/radius tidak berkelipatan 7
12. Which of the following statements correctly describes the motion of the car shown by the velocity time graph
Mana dari pernyataan-pernyataan berikut benar menjelaskan gerakan mobil yang ditunjukkan oleh kecepatan waktu grafik.
13. What is the area of the right triangle shown below
ANSWER:
60.
Penjelasanya :
(theorema phytagoras) a=[tex]\sqrt{b^{2} -c^{2} }[/tex]
a= 17[tex]\sqrt{17^{2}-8^{2} } = \sqrt{289-64}[/tex]
a=[tex]\sqrt{225} =[/tex]15
(the area of the right triangle) :
1/2 x a x h
1/2 x 8 x 15
= 60
ur welcome:)
14. what is the area of the rectangle shown below?
Jawab:
Penjelasan dengan langkah-langkah:
The area= luas yaa
okee berarti sangat gampang kpk!
Luas persegi panjang= lebar x panjang
maka panjang= 5 3/4 =23/4 cm dan lebar=3 cm
L= pxl
= 23/4 x 3
=69/4
=17 1/4 cm atau 17,25 cm
15. What is the name and function of the tool below?
Jawab:
Erlenmeyer Glass
Penjelasan dengan langkah-langkah:
The point is that this Erlenmeyer flask is used as a place or container for storing media or solutions. And can also be used in mixing chemical solutions that will later be used for laboratory tests.
16. What is y- intercept point of the graph below?
Jawaban:
(0,-6)
Penjelasan dengan langkah-langkah:
ingat bahwa y- intercept point (titik potong sumbu y) adalah titik yang memotong sumbu y (vertikal) dan titik bertemunya garis di x=0
lokasinya pada fungsi kuadrat adalah (0,c)
misal...
x² - 2x + 3
a = 1
b = -2
c=3
maka titik potong sumbu y adalah (0, 3)
--------
di grafik, titik potong sumbu y berada di (0,-6)
17. What is the name and the function of the item below?
Jawaban:
it's a iron,its function is to iron clothes so that they are neat and clean
Penjelasan:
semoga membantu yah.. :)
Jawaban:
the name is iron
the function is to tidy up and smoothen our clothes so that we can look good when wearing clothes
Penjelasan:
artinya
namanya setrika
fungsinya untuk merapikan dan melicinkan pakaian kita sehingga kita bisa tampil bagus saat menggunakan baju
semogamembantu
18. 3. answer the questions below based on the texta. how is the bikeb. what is the function of the basket
answer: a. how is the bike?
explanation: pertanyaannya lebih masuk ke seluruh text karena main topicnya adalah sepeda.
19. 1) what is the function of hospital ? 2) what is the function airport? 3) what is the function of cinema? 4) what is the function of harbour? 5) what is the of rail iway station? 6) what is the function of book store? 7) what is the function of muxum?
1.For Take People sick
2.For Up AirPlane
3.For Watching Film's
4.For Placing A Boath
5.For Up A Train
6.For Buying Book
7.For Top Up The Knowledge1. For take People Sick.
2. For a airplanes
3. for watching films.
4. for placing a boat.
5. for train.
6. for buying a book.
Maaf kalo salah ya :) yang no. 7 aku ga ngerti apa itu muxum
20. Answer the questions correctly.seves for stores antenaWhat is the function of a park?A: What is the function of a restaurant?SylfabarasBayuA: What is the function of a jail?What is the function of a bank?What is the function of a library?A: What is the function of a hospi
Jawaban:
1.fungsi taman(garden function)
Parks can be a storage area for ground air, thus ensuring a supply of groundwater and preventing flooding. Parks can be used as a means of conserving the environment (ecosystem). ... As a function of ecological communication, parks can provide various benefits, namely: as a place for social communication.
2.fungsi restoran(restaurant function)
The restaurant serves as a sales service and service to customers of the type of product. Restaurants keep the smooth running of activities which are a turnover of investment costs. The main restaurant operation is to serve various types of food and the appearance of the atmosphere of the restaurant room.
3.fungsi penjara(prison function)
Forming Correctional Assistance to become fully human, aware of mistakes, improving themselves and not criminal acts so that they can be accepted back by the community, can actively play a role in development and can live naturally as good and responsible citizens ...
4.fungsi bank(bank functions)
It is clear that the main function of a commercial bank is to collect funds from the public. Efforts to carry out this function are carried out by issuing various financial products to store funds, ranging from savings, current accounts to time deposits.
5.fungsi perpustakaan(library functions)
library functions to provide a variety of information for the community. The function of education is that the library becomes a place and provides a means of learning both in formal and non-formal environments.
6.fungsi dari sebuah hospital(the function of a hospital)
Hospital is a health service institution that provides complete individual health services that provide inpatient, outpatient and emergency services. ... provide legal certainty to patients, communities, hospital human resources, and hospitals.
Sola itu dah ku terjemahkan.
moga bermanfaat.
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