Perimeter=sum of all 3 sides
Answer:
Step-by-step explanation:
<em>(look at the picture)</em>
We have:
two halves of circle (whole circle) with radius r = 7m;
the suqare wih length side a = 14m;
the triangle with base b = 14m and hight h = 3.9m.
The formula of an area of a circle:
Substitute:
The formula of an area of a square:
Substitute:
The formula of an area of a triangle:
Substitute:
The area of a figure:
2mn + 4n² + 5m² - 7mn = 4n² + (2mn - 7mn) + 5m² = 4n² - 5mn + 5m²
Answer: C
A) the integers greater than 10
countable infinite: 1 -> 11; 2 -> 12; 3 -> 13; 4-> 14; 5->15; ...
b) the odd negative integers
countable infinite: 1-> -1; 2-> -3; 3-> -5; 4-> -7; 5-> -9; ...
c) the integers with absolute value less than 1,000,000
finite (-999,999; -999,998; -999,997;...0;...; 999,997;999,998;999,999)
d) the real numbers between 0 and 2
uncountable
e) the set A _ Z+ where A = {2, 3}
finite (it is empty)
f ) the integers that are multiples of 10
countable infinite: 1-> 10; 2-> -10; 3-> 20; 4-> -20; 5-> 30; 6-> -30;...
