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stiv31 [10]
2 years ago
14

What is the minimum unit cost of C(x)=0.7^2-210x+27,464?

Mathematics
1 answer:
Vika [28.1K]2 years ago
6 0
No local extrema i think?
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A Bike shop charges by the hour to rent a bike. Related items are rented for flat fees. Write an expression that represents how
IgorLugansk [536]

Answer:

y= b+ 3a

Step-by-step explanation:

Given data

We are required to rent a bike and a helmet

le the flat fee for bike rental be a

and the flat fee helmet be b

let the number of hours be h

and let the total cost be y

So

y= b+ah

for h = 3

tThen the expression for the total is given as

y= b+ 3a

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3 years ago
In 47,201 what digit tells the number of thousand
Rudiy27

Answer: The 7

Step-by-step explanation:

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2 years ago
What is the equation of the following graph in vertex form (0,12) (2,0) (4,-4) (6,0)
Scorpion4ik [409]
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3 years ago
1. There are 50 contestants signed up for a TV show. There are 36 more female contestants than male contestants. How many female
mr Goodwill [35]

Answer:

males = 7

females = 43

Step-by-step explanation:

whilst it may seem intuitive to simply subtract 36 from 50, it is not saying "there are 36 males, how many females?" but instead, "the difference between the number of males and females is 36".

You can solve this equation most easily algebraically. For example:

Number of males = x

number of females = y

the question states that the total number of people = 50

therefore we can say that the total number of males (x) + the total number of females (y) = 50 people

therefore: x + y = 50

similarly, the question says that the number of males (x) + 36 = the total number of females (y)

therefore: x + 36 = y

we now have two equations:

x + y = 50

x + 36 = y

whilst both equations have two unknowns (x and y), therefore we can't simple solve for x or y, with the combination, we can see a pattern.

focusing on the second equation: x + 36 = y

we can add x to both sides, because you can pretty much do anything to the equation as long as you do it to both sides.

x + 36 + x = y + x

now this may seem very random, but you now see that one side of the equation equals y + x, and remember from the other equation, x + y = 50. Therefore we can substitute x + y in the second equation for 50.

our two equations:

x + 36 + x = y + x

x + y = 50

therefore:

x + 36 + x = 50

for the sake of clarity, we can combine like terms...

x + x = 2x

therefore:

x + 36 + x = 50

2x + 36 = 50

solve for x by subtracting 36 from both sides, then dividing both sides by 2

2x + 36 - 36 = 50 - 36

2x = 14

2x / 2 = 14 / 2

x = 7

now remember:

Number of males = 7 (we now know x = 7)

now that we've solved for x, we can go back to our original equation:

x + 36 = y

and substitute x...

7 + 36 = y

43 = y

Now remember:

Number of females = 43 (we now know y = 43)

therefore there are 7 males and 43 females. we can proof this by adding 7 and 43, and you'll see you reach 50, which is the correct total number of people.

hope this helps :)

8 0
1 year ago
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