Answer:b
Step-by-step explanation:
Consider a set M, and an operation *.
Let a and b be in M, then M is closed under operation * if :
a*b, and b*a produce an element of M
----------------------------------------------------------------------------------------------------
The set of negative numbers (set M) is not closed under subtraction (the operation *).
Consider 2 numbers a=-9 and b=-6 which certainly are in M.
-9*(-6) = -9-(-6)=-9+6=-3 ∈ M (note that * is the regular subtraction -)
(-6)*(-9)=-6-(-9)=-6+9=3 ∉ M
Answer:
see explanation
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
Given
y = x² - 6x + 3
To complete the square
add/subtract ( half the coefficient of the x- term)² to x² - 6x
y = x² + 2(- 3)x + 9 - 9 + 3
= (x - 3)² - 6 ← in vertex form
• If a > 0 then vertex is a minimum
• If a < 0 then vertex is a maximum
Here a = 1 > 0, thus
(3, - 6 ) is a minimum
Answer:
skdjdnfjtnthhr potlas
rmfmrmfmfmrmrjrjfk fkdjtmgjggmjt ne jfjdckmcjfjfjfjgjgmgngjgjv. vb. hahaha
eorirififjtjrjrjrjejfjrjfjrjfjfjfnfmc h için mvnvnffnfnnfdmm