The pool itself has a radius of 15 ft
Add on the 5 ft buffer zone and we have a 15+5 = 20 ft radius
Circumference
C = 2*pi*r
C = 2*pi*20
C = (2*20)*pi
C = 40pi
C = 40*3.14
C = 125.6
Rounding up to the nearest foot, you need 126 feet of fencing
87 the to you do why try ice
The example is 1 x (9 x 5) = 45
Using the associative property of multiplication, we basically rearrange the parenthesis to group the first two terms like so: (1 x 9) x 5
So this is why choice D (1 x 9) x 5 = 45 is the answer
This means that 1 x (9x 5) = (1 x 9) x 5 is a true equation
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AM I WRONG?
Answer:
g(x) = x² + 4x + 1
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Here (h, k) = (- 2, - 3), thus
y = a(x + 2)² - 3
To find a substitute (2, 13) into the equation
13 = a(2 + 2)² - 3
13 = 16a - 3 ( add 3 to both sides )
16 = 16a ( divide both sides by 16 )
a = 1, hence
g(x) = (x + 2)² - 3 ← expand factor and simplify
= x² + 4x + 4 - 3
g(x) = x² + 4x + 1