I am assuming ur looking for the sale price....
there are 2 ways to do this...
42 - 0.20(42) = 42 - 8.40 = 33.60 <== sale price
or
if it was 20% off, then u paid 80%...
0.80(42) = 33.60 <== sale price
Answer:
x= +- 4/3
Step-by-step explanation:
(3x+4)(3x-4)=0
make each equation set to 0 and solve
3x+4=0
subtract 4 from both sides
3x=-4
divide both sides by 3
x=-4/3
3x-4=0
add 4 to both sides
3x=4
divide both sides by 3
x=4/3
Answer:
They have the same x-value
f(x) has the greater minimum
Step-by-step explanation:
To find the vertex of a second degree equation, in this case the minimum value, we can use the following equation:
x = -b / 2a
Remember that a second degree equation has the following form:
ax^2 + bx + c
so a = 1, b = -8 and c = 7. Now you have to substitute in the previous equation
x = - (-8) / 2(1)
x = 8 / 2
x = 4
This means that the two functions have the same x-value.
The y value of f(x) would be
f(4) = (4)^2 - 8(4) + 7
f(4) = 16 - 32 + 7
f(4) = -9
So the vertex, or minimun value of f(x) would be at the point (4, -9).
The vertex, or minimun value of g(x) is at the point (4, -4).
So f(x) has a minimum value of -9 and g(x) a minimum value of -4.
C>5
C can be 6, 7, 8, 45, 1000 etc.
C can be any number bigger than 5.
