1. 2-1+5x4x11
5x4=20
2-1+20x11
20x11=220
2-1+220
2-1=1
1+220=221
2. 14/2-1+3
14/2=7
7-1+3
7-1=6
6+3=9
3. 3x8x2-42+5
3x8=24
24x2-42+5
24x2=48
48-42+5
48-42=6
6+5=11
(-2.7)0 = 0 [multiplication of 0 is 0]
Answer:
Ionic Compound
Step-by-step explanation:
:D
Answer:
y/3
Step-by-step explanation:
According to the conditions :
y + y/3 - x = y
y + y/3 - y = x
(3y + y - 3y )/3 = x
y/3 = x
Answer:
20°
Step-by-step explanation:
ΔCAD
BD=CD
∠BCD=50°, ∠BAD= 30°, x= ?
------------
BD=CD ⇒ ∠CBD= ∠BCD= 50° ⇒ ∠BDC= 180°- 50°×2= 80°
∠ADC= 180° - (50°+30°)= 100°
x= ∠ADC - ∠BDC= 100° - 80°= 20°
x= 20°
