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Lemur [1.5K]
3 years ago
6

John owns a hotdog stand. He has found that his profit is represented by the equation P=-x^2+78x+89, with P being the profit in

dollars,and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
6 0
He must sell 158 hot dogs
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A class must have fewer than 18 students due to the number of desks that can be placed in the classroom. Write an inequality tha
forsale [732]

Answer:

  • n < 18
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Step-by-step explanation:

The wording "fewer than" is translated to the math symbol "less than". The variable n represents the number of students.

  <em>the number of students</em> is fewer than 18

translates to ...

  n < 18

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The wording "at least" translates to the math symbol "greater than or equal to."

  <em>the number of students</em> is at least 15

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2 years ago
A and B are two events. P(A) = 0.54; P(B) =0.42; p(A or B) = 0.85. Find the probability of A and B.
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Answer:

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Step-by-step explanation:

Work Shown:

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.13 + 0.85 - 0

P(A or B) = 0.98

Note that P(A and B) is 0. This is because we are told A and B are mutually exclusive events. This means both events cannot happen simultaneously. An example would be flipping a coin to have it land on heads and tails at the same time.

6 0
3 years ago
Which statements about a rhombus are always true? Its diagonals bisect each other. All 4 angles are 90°. Its diagonals are congr
GREYUIT [131]
Hello,


The answer is Its diagonals are congruent. Its diagonals are ⊥ to each other.


I believe you can pick more than 1.

Hope this helps
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3 years ago
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Step-by-step explanation:

y : x

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7 0
3 years ago
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