X=width of a coccer pitch
2x-20=length of a soccer pitch
Area (rectangule)=length x width
We suggest this equation:
x(2x-20)=6000
2x²-20x=6000
2x²-20x-6000=0
x²-10x-3000=0
We solve this quadratic equation:
x=[10⁺₋√(100-4*1*-3000)]/2=[10⁺₋√(100+12000)]/2=
=(10⁺₋110)/2
we have two solutions:
x₁=(10-110)/2=-50, invalid solution.
x₂=(10+110)/2=60
x=60
2x-20=2(60)-20=120-20=100
Solution: the length is 100 m, and the width is 60 m.
To check:
Area=100 m*60 m=6000 m²
The twice of width is =2(60 m)=120 m,
20 m less than twice its width is: 120 m-20 m=100 m=the length.
The answer is C. 37
*Hope I Helped*
Answer: x = 1, x = -1
Step-by-step explanation:
Answer: The probability of Sarah picking a blue marble on 2 consecutive draws without replacement = 15.8%
Step-by-step explanation:
Given: Sarah has a bag of 100 marbles. 40 are blue, 40 are green, and 20 are purple.
The probability of Sarah picking a blue marble on 2 consecutive draws without replacement = 
Hence, the probability of Sarah picking a blue marble on 2 consecutive draws without replacement = 15.8%
Answer:
B. SSS
Step-by-step explanation:
The two triangles already have 2 congruent sides, and the only missing thing to see is that they both share the same side with one another. This automatically makes them congruent.
