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nikitadnepr [17]
3 years ago
12

Pls help 10 ptsssssssssssss NO LINKS

Mathematics
1 answer:
garik1379 [7]3 years ago
8 0

Answer:

A

Step-by-step explanation:

variable x should be isolated ALWAYS ISOLATE VARIABLE may i be marked as brainliest?

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A caterer provides a conference banquet for a price of $40 per person for 20 or fewer people but will decrease the price by $1 p
mel-nik [20]

Answer:

The maximum revenue is $900, obtained with 30 people

Step-by-step explanation:

Naturally, the answer should be a number equal or higher than 20, because up to 20 persons, each one pays the same. Lets define a revenue function for x greater than or equal to 20.

f(x) = x*(40-(x-20)) = -x²+60x

Note that f multiplies the number of persons by how much would they pay (here, assuming that there are more than 20).

f is quadratic with negative main coefficient and its maximum value will be reached at the vertex.

The value of the x coordinate of the vertex is -b/2a = -60/-2 = 30

for x = 30, f(x) = 30*(40-(30-20))=30*30=900

So the maximum revenue is $900.

7 0
3 years ago
PLEASE HELP !?!????!?
miss Akunina [59]

Answer: Supplementary Angles

Step-by-step explanation:

Supplementary angles are a pair of angles whose sum is 180°. 45° and 135° add up to 180°. Therefore, the answer is supplementary angles.

4 0
2 years ago
Convert 0.0045 from standard form to scientific notation.
djyliett [7]
I did not catch well, but i think you already got your answers. Let me explain. For the first part you got your notation right: for 0.0045 the correct scientific notation is 4.5 x 10^-3. Now the second part, the answer would be the first one, the notation that you are giving is the one who corresponds to <span>4.5 x 10^-2, the first option you have. Hope it helps</span>
3 0
4 years ago
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From the top of a building, 40 feet above the ground, a construction worker locates a rock at a 12° angle of depression. How far
MA_775_DIABLO [31]

Answer:

188 m

Step-by-step explanation:

\tan(12)  =  \frac{40}{x}  \\ x =  \frac{40}{ \tan(12) }  \\ x = 188

6 0
3 years ago
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Kara boys 36 bagels. Ten are whole wheat. What fraction of the bages are
svetoff [14.1K]

Answer:

5/18 is the answer to this question

Step-by-step explanation:

7 0
3 years ago
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