Answer:
3/4 inch per year
Step-by-step explanation:
A <em>unit </em>rate is the change in some quantity per <em>one</em> of another quantity. One common unit rate is <em>miles per hour</em>, which measure the number of miles traveled in <em>one hour</em>. Here, we're asked for the unit rate of plant growth per year, and we're told that at 16 years old, the plant measures 12 inches. Assuming this growth is <em>linear</em> (that is, it grows by the same amount each year), we can divide each quantity by the number of years (16) to find a unit rate of 12/16 = 3/4 inch per year.
Angle = 36 degrees =
=
now, radius = 10 cm
so arc = radius x angle = 10 x pi/5 = 2pi = 6.28 cm
It would be 4!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Equation is :
( x + 2 )² + ( y - 1 )² = r²
( - 4 + 2 )² + ( 1 - 1 )² = r²
4 = r², than we will plug in to a formula:
( x + 2 )² + ( y - 1 )² = 4
x² + 4 x + 4 + y² - 2 y +1 = 4
x² + y² + 4 x - 2 y + 1 = 0
Answer: B )
