Answer: 17.5
Step-by-step explanation:
7:10 = x:25
times both sides by 25
25(7/10) =x
than solve for x
X = 25 × (7/10)
X = 17.5
Answer:
decagon is 36° 20-gon is 18°
Step-by-step explanation:
divide de number of sides by 360
N/360
10/360= 36
Answer:
Step-by-step explanation:
2.
AE=2BD
4x+14=2(4x+5)
4x+14=8x+10
8x-4x=14-10
4x=4
x=1
5.2
AB+ED=2FC
AB+36=2×20
AB=40-36=4
next.
m∠J+m∠N=180
6x+5+9x+20=180
15x=155
3x=31
x=\frac{31}{3}
∠N=9x+20=31×3+20=93+20=113
∠M+∠N=180
∠M+113=180
∠M=180-113=67°
