Q2. The answer is 15.
GH = IG
GH = 5x - 10
IG = 3x
5x - 10 = 3x
5x - 3x = 10
2x = 10
x = 10/2 = 5
GH = 5x - 10 = 5 * 5 - 10 = 25 - 10 = 15
Q3. The answer is 2
<ABD = < DBC
<ABD = 10y°
<DBC = (8y + 4)°
10y° = (8y + 4)°
10y = 8y + 4
10y - 8y = 4
2y = 4
y = 4/2 = 2
Q4. The answer is 40°
<DBE = <DBC + <CBE
<DBC = 10y°
<CBE = <DBC = 10y°
y = 2
<DBC = <CBE = 10y° = 10*2° = 20°
<DBE = 20° + 20° = 40°
Q5. The answer is 47
The question is incomplete, but after some internet based research, I found out that the complete question is:
If m<FBA = 7x + 6y, what is <FBA
m<FBA = 7x + 6y
x = 5
y = 2
m<FBA = 7 * 5 + 6 * 2 = 35 + 12 = 47