Answer:
Let the breadth is x, then the length is 3x.
<u>The area is:</u>
<u>The breadth is decreased by 2 m: </u>
<u>The length is increased by 4m: </u>
<u>The area is now:</u>
- (x - 2)(3x + 4) = 3x² - 1/3(3x²)
- 3x² + 4x - 6x - 8 = 2x²
- x² - 2x - 8 = 0
- x² - 2x + 1 = 9
- (x - 1)² = 3²
- x - 1 = 3
- x = 4
The breadth was 4 m and the length 12 m
Answer:
one
Step-by-step explanation:
A unit rate compares a quantity to one unit of measure.
3x + 8 = 3x - 5
3x - 3x + 8 = -5
8 = -5 (incorrect)
this means there is no solution, because whatever number u sub in for x, it will not come out true
Answer:
name them
A=(-2,5)
B=(-2,1)
C=(1,1)
sides:
AB=c=4
AC=b=√(3²+4²)=5
BC=a=3
then we do this
2p=a+b+c
2p=3+4+5=12
p=6
then we calculate the area:
√(p(p-a)(p-b)(p-c))
Area=√6(6-3)(6-4)(6-5)
Area=√(6×3×2×1)
Area=√36=6
