Answer:
in²
Step-by-step explanation:
The circumference of a circle is , which means that in this case, r = 8 (since 2r = 16). The equation for the area of a circle is , so therefore the area of this circle is
The answer
the full question is
If A(x1, y1), B(x2, y2), C(x3, y3), and D(x4, y4) form two line segments, and AB ⊥ CD, which condition needs to be met to prove AB ⊥ <span>CD?
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let be A(x1, y1)B(x2, y2) the first line, and C(x3, y3) D(x4, y4) the second
the slope of the first line is m = y2 -y1 / x2 - x1
the slope of the second line is m' = y4 -y3 / x4 - x3
so the condition needs to be met to prove AB ⊥ CD is
y2 -y1 y4 -y3
m x m' = --------- x ------------ = -1
x2 - x1 y4 -y3
Answer:
Option C is the answer.
Step-by-step explanation:
The possible advantage of offering rewards or incentives to increase response rates is :
A possible advantage of offering rewards or incentives to increase response rates is that respondents put more effort into completely and accurately answering the survey questions because they feel obligated.
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The disadvantage can be a biased result or outcome.
Because suppose if it is a product based survey and you are offered some reward for answering the questions, then it is possible that respondents answers are product driven, to get the reward.
The slope of the graph is 6