Find the measure of Angle B if...A & B are supplementary, and A=2x+4 B=3x+16. a. 112
b. 32
c. 12
d. 52

Use the picture below of the isosceles triangle to solve for x & y.

a. x=47 y=43
b. x=90 y=43
c. x=90 y=86
d. x=86 y=43

1) because A and B are supplementary

=> 2x + 4 + 3x + 16 = 180

<=> 5x = 160

<=> x = 32

with x = 32 => angle B = 3.32 + 16 = 96 + 16 = 112

2) see in the picture, because triangle ABC is the isosceles triangle => angle A = 180 - 2.47 = 180 - 94 = 86

we also have:

2y = 86

x = y + 47

=> y = 43

x = 43 + 47 = 90

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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