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2 years ago

The distance between Manchester and Leicester is 105 miles c) what is the distance in km

Mathematics

1 answer:

VikaD [51]2 years ago

5 0

Answer:

168.981

Step-by-step explanation:

105 miles to km is 168.9 km

or 169 if u want to round it to the nearest km

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The profit function p(x) of a tour operator is modeled by p(x) = −2x^2 + 700x − 10000, where x is the average number of tours he

pav-90 [236]

Answer:

Range of the average number of tours is between 150 and 200 including 150 and 200.

Step-by-step explanation:

Given:

The profit function is modeled as:

$p(x)=-2x^2+700x-10000$

The profit is at least $50,000.

So, as per question:

$p(x)\geq50000\\-2x^2 + 700x-10000\geq 50000\\-2x^2+700x-10000-50000\geq 0\\-2x^2+700x-60000\geq 0\\\\\textrm{Dividing by 2 on both sides, we get}\\\\-x^2+350x-30000\geq 0$

Now, rewriting the above inequality in terms of its factors, we get:

$-1(x-150)(x-200)\geq 0\\(x-150)(x-200)\leq 0$

Now,

$x0\\x>200,(x-150)(x-200)>0\\For\ 150\leq x\leq200,(x-150)(x-200)\leq 0\\\therefore x=[150,200]$

Therefore, the range of the average number of tours he must arrange per day to earn a monthly profit of at least $50,000 is between 150 and 200 including 150 and 200.

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3 years ago

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