Question

how do i do this? Find the value of x. they give me two triangles one is large and one is smaller but the same shape to scale. the large triangle has values on two sides the values of the two sides are 12 and 15 the small triangle has a value on one side that is the same as the larger triangles side with the value of "12" but the smaller triangles side value is 8. the side of the small triangle that is the match to the larger triangles side valued at "15" is labeled x-4. how am i supposed to find x? is there a formula? also how do i upload a image?lol

Answer 1

(Press attach file) below

Answer 2

thanks i fond it now @Andrewthehelper

Answer 3

*found

Answer 4

Since the two triangles are the same shape and scale, then the they should be proportional.

So solve it using proportions. The ratio of two sides of one triangle should be equal to the ratio of corresponding sides of the other triangle.

Answer 5

so just set up a proportion and cross multiply divide? @marshallinwashington

Answer 6

Just cross multiply and you will have an equation for which you can solve for x. \[\frac{ 12 }{ 15}=\frac{ 8 }{ (x-4) }\]\[12(x-4)=8*15\]

Answer 7

thanks @marshallinwashington