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Marat540 [252]
3 years ago
5

If a kid ran one mile in 7 minutes how fast did the kid run in mph.

Mathematics
2 answers:
nlexa [21]3 years ago
8 0

Answer:  approximately 8.5714 mph

========================================================

Work Shown:

(1 mile)/(7 minutes) = (x miles)/(1 hour)

(1 mile)/(7 minutes) = (x miles)/(60 minutes)

1/7 = x/60

1*60 = 7*x .... cross multiply

60 = 7x

7x = 60

x = 60/7 .... divide both sides by 7

x = 8.5714

balandron [24]3 years ago
5 0

Answer:

8.6 mph

Step-by-step explanation:

to hard to explain

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The quantity demanded x for a product is inversely proportional to the cube of the price p for p > 1. When the price is $10 p
LenaWriter [7]
Q(p) = k/p^3 . . . . . . . . we want to find k
q(10) = k/10^3 = 64
k = 64,000

Revenue = q(p)*p = 64000/p^2
Cost = 150 +2q = 150 +2*64000/p^3

Profit = Revenue -Cost = 64000/p^2(1 -2/p) -150

Differentiating to find the maximum profit, we have
.. dProfit/dp = -2(64000/p^3) +6(64000/p^4) = 0
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A price of $3 per unit will yield a maximum profit.

7 0
3 years ago
Please help☹️
Anna35 [415]

Answer:  

The width of the store is 15 feet

Step-by-step explanation:

If the area (l×w) of the store is 325 square ft., then we just solve for width using the area and the length.

width = \frac{area}{length}

which would be

width = \frac{325}{21.6}

which equals 15

Hope this helps! If you could mark this answer as brainliest I would really appreciate it!

6 0
4 years ago
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How many small boxes will fit inside the large crate?? Plz explain
USPshnik [31]
Just multiple the three numbers then divide it by 6.5
8 0
3 years ago
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PLZ HELP ASAP RADIANS AND ARC LENGTH
velikii [3]

<span>The arc length by definition is given by:</span>

<span> S = R * theta</span>

<span> Where,</span>

<span> R: radio</span>

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<span> Substituting values we have:</span>

<span> S = 10 * (3/2) pi</span>

<span> Rewriting we have:</span>

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<span> <span>S = 15pi</span></span>

3 0
3 years ago
I need help with my math. I don't understand any of it. :(
andre [41]
This is very easy just alot of terrible numbers lol.

If she goes "down" for 90 SEC  that means she is moving Negative.
So she moves for 90 seconds at a Rate of 3.5 Feet per second
Which means every second she goes down she will subtract 3.5 Ft
Since she is moving for 90 SEC then this will be the equation
 Feet will be negative because she is going down.
-3.5 X 90=?  You might need a calculator.

Now that she has gone down she decided to go up.  For 30 seconds at a different rate. 2.2 Seconds. So now since she is going up it is Increasing. 
Feet will be Positive because she is going up now.
This is the equation 
2.2 X 30=? 
First you want to add both the equations you solved so far.
Now she wants to go to Exactly 0 . So she decides to go up really fast!
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So you take the amount you added which should be negative 
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4.8 Divided by ( the equation you added) = ? SEC

SEC= SECONDS FT= FEET 

5 0
3 years ago
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