7. What is the length of the line segment between A(–5, 8) and B(7, 8)?
1 answer:
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Answer:
According to the passage, we have the next equation:
where "K" is a proportional constant
Leaving at the end with the next equation:
Integrating the equation, we have:
where "C" is a constant
Then, we have the 2 conditions for the problem:
1) t=0 → r=10
Replacing in the equation, we have C = 10
2) t=5 → r=8
Replacing in the equation, we have K = -0.4
Finally, the time which the snowball will be completely melted will be when r = 0. So replacing in the equation
t = 25 minutes
Answer:
x = 43°
Step-by-step explanation:
The chord- chord angle AED is half the sum of the arcs intercepted by the angle and its vertical angle, that is
x = (54 + 32)° =
× 86° = 43°
Answer:
The triangles SYX and SYZ are congrient so by CPCTC ,
and
.
Step-by-step explanation:
Given information: YS is the perpendicular bisector of XYZ.
In triangle YXS and triangle YSZ,
(YS is the perpendicular bisector of XYZ)
(Common side, Reflexive property)
(YS is the perpendicular bisector of XYZ)
By ASA postulate,
The corresponding parts of congruent triangles are congruent. so,
