Two long jumpers competed in a world-class track meet. The first athlete jumped a distance of 28.65 feet, and the second athlete
2 answers:
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Answer:
See Explanation
Step-by-step explanation:
The question is incomplete because the coordinates of A, B and C were not given in the question.
However, the following explanation will guide you...
The midpoints, C of two point A and B is calculated as:
Where are the coordinates of A
and
are the coordinates of B
Take for instance, the given coordinates are
A(4,6); B(2,4) and C(3,5)
Then;
Plug in these values in the given formula:
In that case,
C is really the midpoint
To the b part: <em>Explaining why ratio 1:1 is used</em>
The reason is that both parts of the ratio are in equal proportion (1 and 1);
Because of this equal proportion, ration 1:1 is right to calculate the midpoint
Let the width be x. Since the length is 30inches longer than the width, the length is 30 + x.
Area = length x width = (30 + x)(x)
i.e. (30 + x)(x) = 1800 square inches.
x + 60 = 0 or x - 30 = 0
x = -60 or x = 30
but the width cannot be a negative number, hence x = 30inches
i.e. width = 30 inches
length = 30 + 30 = 60 inches.
Area = length x width = (30 + x)(x)
i.e. (30 + x)(x) = 1800 square inches.
x + 60 = 0 or x - 30 = 0
x = -60 or x = 30
but the width cannot be a negative number, hence x = 30inches
i.e. width = 30 inches
length = 30 + 30 = 60 inches.
Answer is this this is the correct answer
