The length of a swimming pool is 8 m longer than it's width and the area is 105m²
2 answers:
Answer:
Below
Step-by-step explanation:
The area of the swimming pool is
● A = L × w where L is the length and w is the width
The length is 8 m more than the width L = w + 8
● A = (w+8)×w
● A = w^2 +8w
● 105 = w^2 + 8w
● w^2 + 8w - 105 = 0
This is a quadratic equation.
We will solve by graphing it using a graphing tool
The solutions are the intersection points with the x-axis
We will only take the positive solution since the width can't be negative.
The solution is 7 (picture below)
● w = 7 m
The length is
● L = w + 8
● L = 7 + 8
● L = 15 m
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Answer:
I honestly was having the worst time trying to solve this sorry :(, for real idk if any of these are right
i got 2 answers; 1st: ≈0.5 mph
the 2nd; 2 mph
Step-by-step explanation:
Speed =
2/3 miles = 3520 feet
1/3 hours = 20 minutes
------Make a proportion-----
cross multiply------
3520 * 60 = 211200
5280 * 20 = 105600
Divide
---(this is where i got confused cuz 2 doesn't make any sense)--
If you flip them, which makes more sense
hope i helped :(