Jarvis needs to determine the distance across a lake. However, he can't measure this distance directly over the water. So, he set up
a situation where he could use the measurements of two similar triangles to find the distance across the lake.
He selects a point X such that XZ is perpendicular to VZ, where V is a point at the other end of the lake. He then picks a point Y on
XZ. From point Y, he finds point W on XV such that WY is parallel to VZ.
If XY = 2,312 feet, WY = 1,156 feet, and XZ = 6,936 feet, what is the length of VZ, the distance across the lake?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Whats the name of the vertical axis

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.