A surveyor needs to measure the distance across Lake Estell from point X to point Y. To do this he located a point Z on land so that a right AXYZ was formed. He then measured the distances from X to Z and from Y to Z. His measurements are sown on the diagram below.
X
Lake Estell
12 yd
Z
17 yd
Od = /17 - 12²
Od = V172 +12
Od = V122 - 17
Od = 17 - 12

the answer is 31.27mph

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step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it