The awnser is 20 quarters
Answer:
A. cos 60° = ; x = 6 feet
Step-by-step explanation:
apex
The equation of a parabola is given. y=
Here the value of 'a' = 18 and it is positive, it means the parabola opens up.
For vertical parabola the focus point is (h , k+p)
Where (h,k) is the vertex and p =
(p is the distance between vertex and focus)
First we find vertex (h,k)
h = 
a = 18 and b = 4
So h=
=
= 
Plug in -1/9 for x and find out k
k = 
= 
= 
So vertex is (
,
)
P =
, we know a= 18
So p =
= 
Focus is ( h, k +p)
h =
k = 
and p = 
k + P =
+ 
Take common denominator 72
k + p =
+
=
= 
Focus point is (
,
)
The domain is the x-values used by the graph, so you want to see how your graph lines up with respect to the x-axis.
This graph starts out with an x-value of 2 (although it doesn't really use 2, since it's an open circle) and then continues to the right forever.
The domain is x > –2.
Answer:
A. 10x^2 +53x +63
B. degree 2; quadratic trinomial
C. the result of the multiplication of polynomials is a polynomial
Step-by-step explanation:
<h3>Part A:</h3>
The area is the product of length and width. The distributive property is useful for simplifying the expression.
A = LW
A = (2x +7)(5x +9) = 2x(5x +9) +7(5x +9)
A = (10x^2 +18x) +(35x +63)
A = 10x^2 +53x +63 . . . . area expression
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<h3>Part B:</h3>
The highest power of x is 2. There are 3 terms. A degree-2 polynomial is called a "quadratic." A 3-term polynomial is called a "trinomial."
- degree 2
- quadratic trinomial
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<h3>Part C:</h3>
In part A we multiplied two polynomials and came up with a result that is a polynomial. This suggests polynomials are closed with respect to multiplication.