Rational number, in arithmetic, a number that can be represented as the quotient p/q of two integers such that q ≠ 0. In addition to all the fractions, the set of rational numbers includes all the integers, each of which can be written as a quotient with the integer as the numerator and 1 as the denominator.
Answer:
(x + 5)(x + 4)
Step-by-step explanation:
![x^{2} +9x+20=(x+5)(x+4)](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B9x%2B20%3D%28x%2B5%29%28x%2B4%29)
Mixed number is (wholenumber)+(properfraction)
a proper fraction is a/b where a<b and b≠0
so
percent means parts out of 100
x%=x/100
so
276%=
276/100=
200/100+76/100=
2+76/100=
2+38/50=
2+19/25
2 and 19/25
The answer is 7
Your welcome
Answer:
y= -1/9(x-1)^2 +2
Step-by-step explanation:
The vertex is at (1,2) and another point is at (-2,1).
We know the vertex form of a parabola is
y= a(x-h)^2 +k where (h,k) is the vertex
Substituting the vertex in
y= a(x-1)^2 +2
We have another point, (-2,1)
Substitue this in with x=-2 and y =1. This will let us find a
1 = a(-2-1)^2 +2
1 = a (-3)^2 +2
1 = a*9 +2
Subtract 2 from each side
1-2 = 9a +2-2
-1 = 9a
Divide by 9
-1/9 = 9a/9
-1/9 =a
Putting this back into the equation
y= -1/9(x-1)^2 +2