Answer:
6x>-24 x=2
Step-by-step explanation:
( the > needs to have a line under it)
The vertex would be C. The angle is angle DCB or angle BCD
9514 1404 393
Answer:
2. -(-73) is positive
Step-by-step explanation:
It's not too difficult, but you can get wrapped around the axle. Here are the rules:
- the opposite of a positive number is a negative number
- the opposite of a negative number is a positive number
That is, turning a number to its opposite is just changing its sign.
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If you layer these rules, you find ...
the opposite of (<em>the opposite of a positive number</em>) is a positive number
The first rule tells you <em>the statement in parentheses is a negative number</em>, and the second rule tell you its opposite is a positive number.
That is, a double opposite gets you back where you started. In short, <em>any even number of minus signs cancel each other</em>.
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The numbers you have listed here* are ...
- -730 (negative)
- -(-73) = 73 (positive)
- -75 (negative)
- -(-(-701)) = -701 (negative)
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* We say "listed here" because we're seeing mismatched parentheses and brackets, so we know something is missing. We're going by the signs and numbers that we do see. YMMV
Answer:
Step-by-step explanation:
The focus lies on the x axis and the directrix is a vertical line through x = 2. The parabola, by nature, wraps around the focus, or "forms" its shape about the focus. That means that this is a "sideways" parabola, a "y^2" type instead of an "x^2" type. The standard form for this type is
where h and k are the coordinates of the vertex and p is the distance from the vertex to either the focus or the directrix (that distance is the same; we only need to find one). That means that the vertex has to be equidistant from the focus and the directrix. If the focus is at x = -2 y = 0 and the directrix is at x = 2, midway between them is the origin (0, 0). So h = 0 and k = 0. p is the number of units from the vertex to the focus (or directrix). That means that p=2. We fill in our equation now with the info we have:
Simplify that a bit:
Solving for y^2:
Answer:
9y+18
Step-by-step explanation:
Distribute the 9 to the terms in the parentheses.
9(y)+9(2)
9y+18
