Answer:
I agree, it's also A.
Solution:
Polygon ABCDEFGH is dilated by a scale factor of 3.4 with the origin as the center of dilation to produce polygon A'B'C'D'EFG'H'.
As, when a polygon is dilated , the two pre image and image are similar to each other.
Also, similar shapes have same ratio of their corresponding sides length.
→Pre image (Polygon ABCDEFGH) ~Image ( A'B'C'D'EFG'H').
Dilation factor >1, equal to 3.4.
Length of segment A'H'=3.4 AH
A. If a figure is a polygon, then the sum of the exterior angles is 360°.
B. If the sum of the exterior angles of a figure is not 360°, then the figure is not a polygon.
C. If the sum of the exterior angles of a figure is 360°, then the figure is not a polygon.
D. If a figure is not a polygon, then the sum of the exterior angles is not 360°.
Answer:
The correct option is D.
Step-by-step explanation:
Converse statement : If the sum of the exterior angles of a figure is 360°, then the figure is a polygon.
Now, to form a converse statement, the conclusion becomes the hypothesis and the hypothesis becomes the conclusion.
So, to form the original statement of the given converse statement : Hypothesis will become conclusion and the conclusion becomes our hypothesis.
⇒ Original Statement : The figure is a polygon if the sum of the exterior angles of a figure is 360°.
Now to form the inverse we need the negation of both hypothesis and the conclusion.
Hence, The inverse of the original statement is : If a figure is not a polygon, then the sum of the exterior angles is not 360°.
Therefore, The correct option is D.
Answer:
-0.02
Step-by-step explanation:
To find the mean (average) of a set of numbers, you add up all the numbers and then divide by the total count of numbers. In this case, you have four numbers: -0.05, 0.09, -0.04, and -0.08.
Mean = (Sum of the numbers) / (Total count of numbers)
Mean = (-0.05 + 0.09 - 0.04 - 0.08) / 4
Now, calculate the sum of these numbers:
Mean = (-0.05 + 0.09 - 0.04 - 0.08) = -0.08
Now, divide the sum by the total count of numbers, which is 4:
Mean = -0.08 / 4 = -0.02
So, the mean of the numbers -0.05, 0.09, -0.04, and -0.08 is -0.02.
Explanation:
For the expression (s-t)(s/t) we first use the distributive property:
We can write both s and t as fractions by using a denominator of 1:
To multiply frations, we multiply straight across:
In the second fraction, st/t, the t will divide out, or cancel, since it is in both the numerator and denominator: