Ka tolong dibantu tugas mtk aku
Penjelasan dengan langkah-langkah:
1. (2x+4)⁰ + (8x +1)⁰+ (4x+7)⁰ = 180⁰
= 14x + 12 = 180
14x = 168
x = 168/14 = 12
Sudut ABC = sudut B = (8x+1)
sudut B= 97⁰
2. keliling lintasan = 23+37+44 = 104
diki berlari 3 kali keliling
maka 3 x 104 = 312 m
3. alas 8 meter tinggi 15 meter
luas lahan = 1/2. alas.tinggi = 1/2. 8. 15
Luas = 60 m²
biaya kolam = 60 x Rp. 300.000 = Rp. 18.000.000
4. nilai x
(4x +8)+ 2x + (180- 7x + 7 )= 180
6x -7x + 195 = 180
-x = -15
x = 15⁰
b. sudut D = 4x + 8 = 4(15)+8 = 68⁰
sudut E = 2x = 2(15) = 30⁰
sudut F = 180-(68+30) = 180-98 = 82⁰
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