The annual number of cases can be modeled using a quadratic equation y = 14x2 – 9x + 1. the variable x represents the number of years after 2008. the variable y represents the number of pertussis cases in year x. according to the equation, in what year can the county be expected to have 2,619 cases of pertussis?
Angle ABC is an inscribed angle and its angle equals one half of the intercepted arc.
Angle ABC = 118 / 2 = 59 degrees.
Source:
http://www.1728.org/circangl.htm
Answer:
if by decomposition you mean breaking it into parts then
break it into 2 triangles and 1 rectangle
left to right
triangle with base y and height h
h=10
y=3
area of triangle=1/2bh
area=1/2(10)(3)
area=5(3)
area=15
rectangle of length x and height h
area= length times width
x=8
h=10
area=8 times 10
aera=80
last triangle
should be same as other since same base (y) and same height (h)
15
add
15+80+15=120
Step-by-step explanation:
