Answer:
x = ± 2
Step-by-step explanation:
Given
x² = 20 ( take the square root of both sides )
x = ±
= ±
= ± 2
Answer:
(10x+26)=36x
(8x+42)=50x
Step-by-step explanation:
hope this helps!
Answer:
640
Step-by-step explanation:
you say 100% = 800
what about 80%(i get 80% after substracting 100% that's marked price - 20% discount)
then u say 80×800÷100
Answer:
x = - 20 / 3, y = 14 / 3
Step-by-step explanation:
In the picture