4. interpolation methods are used to estimate heights above sea level for locations where direct measurements are unavailable. in the article "transformation of ellipsoid heights to local leveling heights" (m. yanalak and o. baykal, journal of surveying engineering, 2001: 90–103), a second-order polynomial method of interpolation for estimating heights from gps measurements is evaluated. in a sample of 74 locations, the errors made by the method averaged 3.8 cm, with a standard deviation of 4.8 cm

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

about 168 miles

step-by-step explanation: