Answer: Annabelle is using the a measure of central tendency defined as the Mode.
Step-by-step explanation: A measure of central tendency in its simplest definition is a single value or measure that can safely be used to represent all members belonging to an entire set of given data. Hence, as a good illustration, one figure can be used to confidently represent all other ninety nine figures where a set of one hundred figures were given.
The mean, median and mode are commonly accepted measures of central tendency.
The mode is the most frequently occurring value in a given set of data. As such, the modal value is statistically acceptable as a representative of the entire set of values or data.
If Annabelle measures the sides of 15 right triangles and based on her observations, she concludes that for any right triangle the sum of the squares of the two legs is equal to the square of the hypotenuse, what she has done is taking the most frequently occurring value, and in her experiment, the most frequent of all observed data satisfies the Pythagorean Theorem.
That is why Annabelle can confidently make her assumption.
Answer: The correct option is (A) reduction.
Step-by-step explanation: Given that the quadrilateral A'B'C'D' is a dilation of the quadrilateral ABCD.
As shown in the given figure, the lengths of the sides of quadrilateral ABCD are as follows:
AB = 5 units, BC = 4 units, CD = 10 units and DA = 6 units.
And, the lengths of the sides of quadrilateral A'B'C'D' are as follows:

We know that the dilation will be an enlargement if the scale factor is greater than 1 and it will be a reduction if the scale factor is less than 1.
Now, the scale factor is given by

Since the scale factor is less than 1, so the dilation will be a reduction.
Ahmed travel
miles in 5 days walking to school and back.
Step-by-step explanation:
Distance from house to school =
miles
Distance from school to house =
miles
Total distance in 1 day = 
Total distance in 1 day = 
Distance traveled in 5 days = 
Distance traveled in 5 days = 
Ahmed travel
miles in 5 days walking to school and back.
Keywords: fraction, addition
Learn more about fractions at:
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Answer:
During the 9th week
Step-by-step explanation:
Scott: 50 + (0.3)(8×25)t
= 50 + 60t
Sophia: 50 + 45t + 30(t-4)
= -70 + 75t
60t + 50 = 75t - 70
15t = 120
t = 8
After 8 weeks they will have the same amount,
Which is during the 9th week