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kipiarov [429]
3 years ago
13

4. If Safa can run a mile in 2 minutes 30 seconds, what is his rate in miles per minute?

Mathematics
1 answer:
ELEN [110]3 years ago
3 0

Answer: 4 miles for a minute i think

Step-by-step explanation:

becuase 2 times 2 is 4 and 30 times 2 is 60 which is 1 min so i think 4

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Stock valued at $49.50 decreases in value by 12% each year. How much will the stock be worth in 5 years? Round your answer to th
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Step-by-step explanation:

f(5)=49.5(0.88)^5

f(5)=$26.12

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3 years ago
Name a polygon that would have a
liubo4ka [24]

Answer:

The polygon has 43 sides . The polygon can be called 43 - gon or tetracontakaitrigon.

Step-by-step explanation:

In a regular polygon all the sides are equal and also all the angles are equal. The sum of the interior angle of a polygon can be calculated with the following formula;

sum of interior angle = (n−2) × 180°

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sum of interior angle = (n−2) × 180°

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3 0
3 years ago
A pizza chef begins to spin a constant volume of dough to make a pie by spinning and tossing the dough into the air, such that t
Alexxandr [17]

Answer:

a ) dAt/dt  =  50,24 in/min

dh/dt  =  -  0,125 in/min

Step-by-step explanation:

The area of the top is At :

At = π*r²

a)  Tacking derivatives with respect to time:

dAt/dt  =  2* π*r * dr/dt

At   t  =  t₁      r  = 16 in     and  dr/dt =  0,5

Then

dAt/dt  =  2*3,14*16*0,5   in/min

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b) The volume of the cylinder is:

Vc =  π*r²*h     ( where h is the heigh of the cylinder )

Tacking derivatives with respect to time

dVc/dt  =  2* π*r*h*dr/dt  +  π*r²*dh/dt

But  dVc/dt  = 0  since the volume remains constant, then:

π*r²*dh/dt  = -  2* π*r*h*dr/dt

r*dh/dt  =  -  2*h*dr/dt

dh/dt  = - 2*0,5*2/16  in/min

dh/dt  =  -  0,125 in/min

4 0
3 years ago
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