Answer:
x∈[20/3;+∝).
Step-by-step explanation:
3x+10≥30; ⇔ 3x≥20; ⇔ x≥20/3
Answer:
$96,008
Step-by-step explanation:
The verbal description of the relationship translates to ...
(last month's sales) -21.5%×(last month's sales) = $75,366
Simplifying, we have ...
0.785 × (last month's sales) = $75,366
Dividing by the coefficient of the variable, we find ...
(last month's sales) = $75,366/0.785 = $96,007.64
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The sales last month were $96,008.
Answer:
Step-by-step explanation:
The standard equation for a parabola is
with vertex at (h, k) and a focal length of |p|
:
or
Comparing this with the standard form we get
The parabola is symmetric around the x-axis.
The focus lies a distance from the center along the x axis
So focus is at
The parabola is symmetric around the x-axis and so the directrix is a line parallel to the y-axis at a distance -p from the center