kylieweeks052704

17.09.2021 • 

Mathematics

40 points What kind of triangle is △BCD? Explain. Triangle B C D sitting on line B D. At vertex B, angle 1 is exterior to the triangle and angle 2 is interior. Together, 1 and 2 form a straight angle. At vertex C, the interior angle measure is 70 degrees. At vertex D, the interior angle is not labeled and the exterior angle has measure 130 degrees.
Group of answer choices

Right triangle; m∠2 = 90

Isosceles triangle; m∠CDB = m∠2

Obtuse triangle; m∠CDB = 180 − 70 = 110

Acute triangle; m∠CDB = 180 − 130 = 50 and m∠2 = 180 − 70 − 50 = 60
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Ответ:

maxy7347go

03.03.2022

Mathematics

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It must have the same slope as the given line, so

m = -A/B = -1/-2 = 1/2

So far, we have

y = mx + b = x/2 + b

Use the given point to find b.

4 = -2/2 + b = -1 + b

b = 5

y = x/2 + 5

Multiply through by 2.

2y = x + 10

Standard form:

x - 2y = -10

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