You need to find the width of the stream. you cannot measure the width directly, so you draw a diagram showing lengths that you can measure. your diagram contains two similar triangles, one in the stream and one on land. use the diagram to find the width of the stream.

You are given that the diagram contains two similar triangles.

Two similar triangles have proportional sizes of corresponding sides.

Then the ratio between smaller legs is the same as the ratio between greater legs:

correct choice is A.

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

109 is the nearest whole number/final answer! : )