Answer:
2. ΔABC is isosceles
Step-by-step explanation:
Given : m∠A = 50
m∠BCD = 180 - (m∠BDC + m∠DBC)
= 180 - (100 + 30)
= 50
then
m∠A = m∠BCD
therefore ΔABC is isosceles
Y -Y1 = m(x-x1)
D. Y-9 = 2(x+3)
Answer:
Step-by-step explanation:
"length is 4 meters less than 2 times the width"
L = 2W+4
"perimeter is 40 meters"
2L+2W = 40
L+W = 20
(2W+4) + W = 20
3W + 4 = 20
W = 16/3 meters
Answer:
Step-by-step explanation:
3x + 3 = -2x + 8
3x + 2x + 3 = 8
5x = 8 -3 = 5
x = 1
y = 3x + 3 = 6