Answer:7
Step-by-step explanation:
A) x= -21/-3
= 7 answer
Answer:
$580
Step-by-step explanation:
Original price = $156.60 / 0.27
Original price = $580
Explanation: turn the percentage into a decimal, like for number 4 make it 0.40
then divide it by 30
Really hopes this helps!
LW = 45
L + 2W = 19
L = 19-2W
substituting for L :-
W(19-2W) = 45
-2W^2 + 19W = 45
2W^2 - 19W + 45 = 0
W = 5 or 4.5
If W = 5, L = 9
If W = 4.5, L = 10
So there are 2 possible answers.