Answer:
Step-by-step explanation:
1) Dimensions are : 40 m, 50m
Solution:
Perimeter= 180m = 2 (a+b)
area = 2000 m^2 = ab
a+b = 90m
a= 90-b
(90-b) b = 2000
90b-b^2 = 2000
b^2 - 90b = 2000= 0
(b-40) (b+50) = 0
b= 40, 50
TAKE NOTE= ^ this means square
2) 5x = 2x² - 3
2x² - 5x - 3 = 0
Factor 2x² - 5x - 3 :
(2x + 1) (x - 3) = 0
2x + 1 = 0
2x/2 = -1/2
x = -1/2
x - 3 = 0
x = 3
Correct me if im wrong :)
Copyright © 2024 EHUB.TIPS team's - All rights reserved.
Answers & Comments
Answer:
Step-by-step explanation:
1) Dimensions are : 40 m, 50m
Solution:
Perimeter= 180m = 2 (a+b)
area = 2000 m^2 = ab
a+b = 90m
a= 90-b
(90-b) b = 2000
90b-b^2 = 2000
b^2 - 90b = 2000= 0
(b-40) (b+50) = 0
b= 40, 50
TAKE NOTE= ^ this means square
2) 5x = 2x² - 3
2x² - 5x - 3 = 0
Factor 2x² - 5x - 3 :
(2x + 1) (x - 3) = 0
2x + 1 = 0
2x/2 = -1/2
x = -1/2
x - 3 = 0
x = 3
Correct me if im wrong :)