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Leya [2.2K]
3 years ago
15

When Marla rounded 19.95 to the nearest tenth she found the number change to 20 is this correct. Explain

Mathematics
1 answer:
nekit [7.7K]3 years ago
5 0
Yes, because a number that is 5 or higher, rounds up. so the five would make the 9 round up, which would make the 19 go to a 20
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3 years ago
What is the equation of the line that goes through the points (5, 11) and (7,21)?
iragen [17]

Answer:

y = 5x - 14

Step-by-step explanation:

First point coordinates

x₁

5

y₁

11

Second point coordinates

x₂

7

y₂

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Result

Slope (m)

5

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Your function

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Equation: y = 5x - 14.

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Alexxandr [17]

Answer:

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Step-by-step explanation:

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At = π*r²

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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:

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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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Lemur [1.5K]

Answer:

Step-by-step explanation:

a I’m pretty sure

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Answer:

a. 1/2

Step-by-step explanation:

7 0
3 years ago
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