1. y=f(x)=170x-4 is a function with variable x representing a year.
2. Let's consider the difference between 2 consecutive years, say year 3 and year 4
f(3)=170*3-4
f(4)=170*4-4
we expect f(3)-f(4) to be 4 since after 4 years, the water will be 4 feet less than after 3 years.
check: f(3)-f(4)=(170*3-4)-(170*4-4)=170*3-4-170*4+4=170*3-170*4=170*(3-4)=170*(-1)=-170
Pi was the ratio of the diamer to the circumfernece (distance around the circle)
pi was the greek letter pi or π which was the first letter <span> περιφέρεια (periphery) and περίμετρος (perimeter)</span>
using 3.14 for pi
area = pi x r^2
since he can see 12 miles in any direction 12 would be the radius
so 3.14 x 12^2 = 452.16 square miles
round the answer as needed.
Answer:
D 138
Step-by-step explanation:
the outside angle(x) of a triangle whose base is extended is always equivalent to the farthest 2 inside angles of the triangle.
x = 48 + 90 = 138
A triangular pyramid has 4 sides, all of which are triangles. The net usually looks like the upside-down version of the Legend of Zelda logo.
