Persamaan garis lurus yang melalui titik (2, 5) dan tegak lurus garis x - 2y + 4 = 0 adalah . . . A.... Question from @SyifaAlyadani

October 2018 2 116 Report

Persamaan garis lurus yang melalui titik (2, 5) dan tegak lurus garis x - 2y + 4 = 0 adalah . . .
A. 2x + y - 9 = 0
B. -2 + y - 9 = 0
C. $\frac{1}{2}$ x - y - 6 = 0
D. $- \frac{1}{2}$ x - y - 6 = 0

(Menggunakan cara)

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Answer

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Answer

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Pernyataan yang benar untuk reaksi : 2CO(g) + O2(g) → 2CO2(g) , ΔH = -x kJ adalah .... A. kalor penguraian CO = x kJ. Mol-1 B. kalor pembentukkan CO = 2x kJ. Mol-1 C. kalor pembakaran CO =- ½ x kJ. Mol-1 D. kalor pembentukan CO2 = ½ x kJ. Mol-1 5. kalor pembakaran CO = 2x kJ. Mol-1

Answer

Kilos X - 2y + 4 = 0
-2y = -x - 4
2y = x + 4
y = 1/2x + 4

y = mx + c

m1 = 1/2
m2 = -2

y - y1 = m(x - x1)
y - 5 = -2(x - 2)
y - 5 = -2x + 4
y = -2x + 9
2x + y - 9 = 0

19 votes Thanks 46

nurfaizatussholihah X -2y +4 = 0
x +4 = 2y
2y = x +4
y = 1/2x +4/2
y = 1/2x +2
Maka, m₁ = 1/2

m₁ . m₂ = -1
1/2 . m₂ = -1
m₂ = -1 per 1/2
m₂ = -2

y -y₁ = m(x -x₁)
y -5 = -2(x -2)
y -5 = -2x +4
y = -2x +4 +5
y = -2x +9
2x +y -9 = 0

Jadi, jawabannya adalah a.
Itu jawabannya.

6 votes Thanks 18

Sebuah gelombang menempuh jarak 50 m dengan frekuensi 10 Hz dan membentuk 5 gelombang. Panjang gelombangnya adalah ... m A. 10 B. 8 C. 6 D. 4 E. 2 Dengan caranya

∫ dx = Mohon bantuannya...

Terdapat polinomial P yang diberikan di bawah. Berapakah derajat dari polinomial ini? P = x³ + x² (x+1)² + 3x + 1

Passive sentence from “A cat ate a fish” is ….. A. A fish eaten a cat B. A fish eating a mouse C. A fish eat a cat D. A fish is eaten by a cat E. A fish was eaten by a cat

Diberikan sebuah fungsi f(x) = 2x - 6 Invers f(x) adalah A. f⁻¹(x) = x - 3 B. Tidak ada Invers C. f⁻¹(x) = x + 6 D. f⁻¹(x) = x/2 + 3 E. f⁻¹(x) = x/2 - 3 Beserta cara

Apa invers dari fungsi berikut f(x) = (x+1)/(x-2) A. f⁻¹(x) = (1 + x)/(x - 1) B. f⁻¹(x) = (1 - 2x)/(x - 1) C. f⁻¹(x) = (1 + 2x)/(x +1) D. f⁻¹(x) = (1 + 2x)/(x - 1) E. f⁻¹(x) = (x - 1)/(1 + 2x) Gunakan cara

Mohon bantuannya, saya ga tau cata ngerubah f(x) menjadi f(2) nya f(x) = 5x +3 g(x) = x+4 maka g(f(2)) adalah..

Diketahui ΔHf CO2, H2O, dan C2H4 berturut-turut : - 395,2 kj/mol, - 242,76 kj/mol, dan – 52,76 kj/mol. Kalor yang dihasilkan pada pembakaran 5,6 gram C2H4 (C=12, H=1) menurut reaksi : C2H4(g) + O2(g) → CO2(g) + H2O(l) ( belum setara ) adalah

Pernyataan yang benar untuk reaksi : 2CO(g) + O2(g) → 2CO2(g) , ΔH = -x kJ adalah .... A. kalor penguraian CO = x kJ. Mol-1 B. kalor pembentukkan CO = 2x kJ. Mol-1 C. kalor pembakaran CO =- ½ x kJ. Mol-1 D. kalor pembentukan CO2 = ½ x kJ. Mol-1 5. kalor pembakaran CO = 2x kJ. Mol-1

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