Answer:
3y+1
Step-by-step explanation:
4y+3-y-2
3y+3-2
3y+1
you just have to combine like terms
The upside down u (intersection) just wants us to find what the two sets have in common....
which is 4 and 6
Answer:
Step-by-step explanation7:
It is negative since there is a negative sign in the front
Answer:
○ Length = 20 centimeters and Width = 5 centimeters
Step-by-step explanation:
Let the length = L
Then the width is L - 15
A = lw
100 = L(L - 15)
L² - 15L - 100 = 0
(L - 20)(L + 5) = 0
L - 20 = 0 or L + 5 = 0
L = 20 or L = -5
Since a length of a rectangle cannot be negative, we discard the solution L = -5 and keep the solution L = 20.
L = 20
width = L - 15 = 20 - 15 = 5
Answer: ○ Length = 20 centimeters and Width = 5 centimeters
