solve the quadratic equation below
1. solve the quadratic equation below
Step by step explanation
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Nomor 1
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[tex]\begin{aligned}\rm \frac{5x+12}{3x}&=\rm x\\\rm 5x+12&=\rm 3x^2\\0&=\rm 3x^2-5x-12\\0&=\rm (3x+4)(x-3)\\&\bf x=-\frac{4}{3}~atau~x=3\end{aligned}[/tex]
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Nomor 2
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[tex]\begin{aligned}\rm \frac{20-8k}{k-5}&=\rm 3k\\\rm 20-8k&=\rm 3k^2-15k\\0&=\rm 3k^2-15k+8k-20\\0&=\rm 3k^2-7k-20\\0&=\rm (3k+5)(k-4)\\&\bf k=-\frac{5}{3}~atau~k=4\end{aligned}[/tex]
2. The picture below shows the changing state of ….
Jawaban:
Sublimation
Penjelasan:
Bahasa Inggrisnya
Jawaban:
freezing
Penjelasan:
maaf klo salah
3. Solve the exponential equation for
Jawaban:
x= -4
Penjelasan dengan langkah-langkah:
Itu 1 saat:
(9/8)⁰
3x+12= 0
3x= -12
x= -4
[tex]( \frac{9}{8} ) {}^{3x + 12} = 1 \\ ( \frac{9}{8} ) {}^{3x + 12} = ( \frac{9}{8} ) {}^{0} \\ 3x + 12 = 0 \\ 3x = - 12 \\ x = \frac{ - 12}{3} \\ x = - 4[/tex]
[tex] \: [/tex]
»Detail Jawaban: Mapel: Matematika Kelas: X Materi: Eksponensial#AyoBelajar!
4. What is the chemical equation for photosynthesis?
Sun,and Water
Sorry wrong
Jawaban:
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
Penjelasan:
sorry if wrong
5. Write the word equation for the reaction between zinc and copper sulfate.
Jawaban:
Zn + CuSO4 ⇒ ZnSO4 + Cu
Penjelasan:
Zn has oxidation number equal to +2. Cu has oxidation number equal to +2. SO4 has oxidation number equal to -2.
6. solve the equation below 3 - 2x - x^2 = 0
Use some tricks.
[tex]$\begin{align}3-2x-x^2&=0 \\ \text{Multipty both }& \text{sides by (-1)} \\ (-1)(3-2x-x^2)&=(-1)(0) \\ -3+2x+x^2&=0 \\ x^2+2x-3&=0 \\ (x+3)(x-1)&=0\end{align}[/tex]
The correct x are:
x = {-3,1}
[tex]x^2-x+3x-3=0 \\ \\ x(\frac{x^2}{x}-{x}{x}+3(\frac{3x}{3}-\frac{3}{3})=0 \\ \\ x(x^{2-1}-1)+3(x-1)=0 \\ \\ (x-1)(x+3)=0 \\ \\ \\ x-1=0 \\ \\ x+3=0 \\ \\ x=1 \ dan \ x=3 \\ \\[/tex]
Jadi x∈{1,-3}
7. Complete the the equation below. What is the missing number? 65 +.... = 100 25 FLER 35 45 . 55
Jawaban:
35
Penjelasan dengan langkah-langkah:
............maaf kalo bener osokdkdd
8. Does the mirror equation hold for the plane mirror? Explain
1/s + 1/s' = 1/f
forr the plane mirror f is infinity,
1/s + 1/s' = 0
1/s = - 1/s'
s' = - s
9. solve the equation below x^2 = 3x + 2 = 0
Assume that the typo in the right side of x² is a pus (+) symbol.
So,
x² + 3x + 2 = 0
Factorize it.
(x+1)(x+2) = 0
Get some radixes:
x₁ + 1 = 0
x₁ = -1
x₂ + 2 = 0
x₂ = -2
So, the solution of the equations are:
x = {-2,-1}
[tex]\displaystyle x^2+3x+2=0\\x^2+2x+x+2=0\\x(x+2)+1(x+2)=0\\(x+1)(x+2)=0\\\\x+1=0\\x=-1\\\\\text{or}\\\\x+2=0\\x=-2\\\\\boxed{\boxed{S=\{-1,-2\}}}[/tex]
10. 1) What is the y-intercept of the quadratic equation below? * y = x2 - 6x + 9
Penjelasan dengan langkah-langkah:
titik potong persamaan kuadrat
y = x² - 6x + 9
- titik potong terhadap sumbu y, x = 0
y = 0² + 6(0) + 9
y = 9
titik potongnya (0, 9)
- titik potong terhadap sumbu x, y = 0
x² - 6x + 9 = 0
(x - 3)(x - 3) = 0
x = 3
titik potongnya (3, 0)
11. 7. The musician creates the songs for the shows.
Artinya
Musisi menciptakan lagu untuk pertunjukan
Semoga membantu!
12. Fill the circles with +, - x, or : to complete the number equation below!
Jawaban:
- and ×
Penjelasan dengan langkah-langkah:
27 - 4 × 5 = 7
so, the circles is filling with - and ×
13. define photosyntesis and the word equation for photosyntesis??
Jawaban:
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Carbon dioxide + Water → Glucose + Oxygen + Water.
or
Carbon dioxide + water + (light energy) → glucose + oxygen gas
14. Mention the formula for causative tenses
Jawaban:
Umumnya ada empat kata kerja causative verb yang sering digunakan, yakni have, get, let, dan make.
1.Have
Aktif : S + (have/ had + agent + action verb (bare infinitive) + object.
Pasif : S+(have-had)+object+action verb(V-3).
2.Get
Aktif : S + (get/ got) + agent + action verb (to infinitive) Pasif : S + (got) + object + action verb (V-3)
3. Let
Aktif : S + let + agent + action verb (bare infinitive)
3. Make
Aktif : S + (make/ made) + agent + action verb (bare infinitive)
Jawaban & Penjelasan:
1. Simple Present Tense
Rumus:S + verb-1
2. Present Continuous Tense
Rumus: S + am/is/are + V.ing
3. Present Perfect Tense
Rumus:S + have/has + (verb-3)
4. Present Perfect Continuous Tense
Rumus: S + have/has + been + V.ing
5. Simple Past Tense
Rumus:S + verb-2
6 Past Continuous Tense
Rumus:S + was/were + v.ing
7 Past Perfect Tense
Rumus:S + had + past participle (verb-3)
Past perfect tense untuk menyatakan bahwa suatu aksi telah selesai pada suatu titik di masa lalu sebelum aksi lainnya terjadi.
Contoh Kalimat:
When he came last night, the cake had run out.
(Ketika dia datang semalam, kue sudah habis.)
Soal Past Perfect Tense
8 Past Perfect Continuous Tense
Rumus:
S + had + been + present participle (-ing)
Penggunaan:
Past perfect continuous tense digunakan untuk mengungkapkan suatu aksi (dengan durasi waktu tertentu) telah selesai pada suatu titik waktu tertentu dimasa lalu.
Contoh Kalimat:
The labors had been demonstrating for an hour when the manager came.
(Pekerja telah berdemonstrasi selama satu jam ketika manager datang.)
Soal Past Perfect Continuous Tense
9 Simple Future Tense
Rumus:
S + will + bare infinitive
S + be (is/am/are) + going to + bare infinitive)
Penggunaan:
Simple future tense untuk menyatakan bahwa suatu aksi terjadi dimasa depan, secara spontan atau terencana.
Contoh Kalimat:
You will win the game.
(Kamu akan memenangkan permainan tersebut.)
I am going to meet him tomorrow.
(Saya akan menemuinya besok.)
Soal Simple Future Tense
10 Future Continuous Tense
Rumus:
S + will + be + present participle (-ing)
Penggunaan:
Future continuous tense untuk mengungkapkan aksi yang akan sedang terjadi pada waktu tertentu di masa depan.
Contoh Kalimat:
He will be sleeping at 10 p.m.
(Dia akan sedang tidur pada jam 10 malam.)
Soal Future Continuous Tense
11 Future Perfect Tense
Rumus:
S + will + have + past participle (verb-3)
Penggunaan:
Future perfect tense untuk mengungkapkan bahwa suatu aktivitas akan sudah selesai pada suatu titik waktu di masa depan.
Contoh Kalimat:
At this time next month, I’ll have finished my English course.
(Pada waktu yang sama bulan depan, saya akan telah menyelesaikan kursus bahasa Inggris.)
Soal Future Perfect Tense
12 Future Perfect Continuous Tense
Rumus:
S + will + have + been + present participle (-ing)
Penggunaan:
Future perfect continuous tense untuk mengungkapkan bahwa suatu aksi akan sudah berlangsung selama sekian lama pada titik waktu tertentu di masa depan.
Contoh Kalimat:
The cat will have been sleeping long when you get home.
(Kucing itu telah lama tidur ketika kamu pulang.)
Soal Future Perfect Continuous Tense
13 Simple Past Future Tense
Rumus:
S + would + bare infinitive
Penggunaan:
Simple past future tense untuk menyatakan suatu aksi yang akan dilakukan, membuat prediksi, dan membuat janji di masa depan pada saat berada dimasa lalu.
Contoh Kalimat:
He would forgive you.
(Dia akan memaafkanmu.)
Soal Simple Past Future Tense
14 Past Future Continuous Tense
Rumus:
S + would + be + present participle (-ing)
Penggunaan:
Past future continuous tense adalah suatu bentuk kata kerja untuk menyatakan aksi atau situasi imajiner yang sedang berlangsung apabila unreal condition-nya terpenuhi (present continuous conditional ~ conditional sentence type 2 dengan continuous tense).
Contoh Kalimat:
I would be attending the conference if I was in Jakarta.
(Saya akan sedang menghadiri konferensi tersebut jika saya ada di Jakarta.)
Fakta:
but I’m not in Jakarta (tapi saya tidak di Jakarta)
15 Past Future Perfect Tense
Rumus:
S + would + have + past participle (verb-3)
Penggunaan:
Past future perfect tense untuk membicarakan suatu aksi yang tidak terjadi di masa lalu (conditional sentence type 3).
Contoh Kalimat:
If you had saved your jewelry and foreign currency in a safety deposit box, they wouldn’t have gone.
(Jika kamu telah menyimpan perhiasan dan mata uang asingmu di safety deposit box, mereka tidak akan hilang.)
16 Past Future Perfect Continuous Tense
Rumus:
S + would + have + been + present participle (-ing)
#Jadikanjawabanygterbaik
15. write the instruction for the picture below
3.cut the paper
4.clean the class
5.read the book
2. Clean the class
3. Cut the paper
4. Draw on a piece of paper
16. create an equation from the word below•best•big• cool•amazing
1) my best friend is beni
2) the house is very big
3) the guy is so cool
4) You do flips that's amazing
17. the picture below shows 8 parts of a plant. write the name of each part! number one is done for you
Jawaban:
LeafBranchFruitLogBud/shootTwigSeedRootPenjelasan:
semoga membantu
18. Write the formula for finding the rate.
How we found a special maths equation hidden in rat whiskers
Robyn Grant, Manchester Metropolitan University
January 27, 2020 2.27pm GMT
Rats have up to 70 whiskers on their faces, varying hugely in size and shape. Almost every mammal possesses whiskers, but these rodents are what we call “whisker specialists”, meaning they have super-sensitive, moveable hairs that they use to explore and sense their surroundings.
Rat whiskers can vary hugely. In our recent research, my colleagues and I analysed 523 whiskers from 15 rats and found that each whisker had a different length and shape. We wanted to investigate more about the shape of these hairs as a first step in understanding what rats feel through their whiskers
19. An object has a position equation of 2t²+4t-8 the equation of the velocity sector for the object is
Kinematics.
x = 2t² + 4t - 8
v = dx / dt
= 4t + 4
20. 1. determine the differential equation foto the give circuit2. transform the equation into laplace transform3. determine the transfer function for the given circuit
Penjelasan dengan langkah-langkah:
jjnrnrjejeheh3u3hehndndjdhr
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