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77julia77 [94]
3 years ago
13

The graph of a proportional relationship contains the point (20, 4).

Mathematics
1 answer:
galben [10]3 years ago
4 0
The is 1/5. hope it helps
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You owe your teacher $26 for the class
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Answer:

Step-by-step explanation:

$15 should be it

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John's commute time to work during the week follows the normal probability distribution with a mean time of 26.7 minutes and a s
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A suitable probability calculator will tell you that probabilty is about 25.9%.


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The normalcdf function on this calculator gives an area between a lower and upper limit. If the upper limit is more than about 8 standard deviations above the mean, the 10th decimal place is unaffected. Since the standard deviation here is about 5, we need to have an upper limit that is about 40 above the mean of about 30. We have chosen 80 as a nice round number and to give a little more margin.

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14.12 = 1/2 (3.6x - 12.8)<br><br> show work
Sergio039 [100]

Answer:

x = 11.4

Step-by-step explanation:

14.12 = \frac{1}{2} ( 3.6x - 12.8 )

Rewrite so that the equation is entirely in decimals;

14.12 = 0.5( 3.6x - 12.8 )

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14.12 = 1.8x - 6.4

Inverse operations;

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+6.4            +6.4

20.52 = 1.8x

/1.8        /1.8

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4 0
3 years ago
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14. Find the distance between (7,217pi/180 ) and (5,-23pi/36 ) on the polar plane.
irina [24]

Answer: the distance is  3.49 units

Step-by-step explanation:

There are some ways to find the exact distance, i will calculate the distance in rectangular coordinates.

When we have a point (R, θ) in polar coordinates, we can transform it into rectangular coordinates as:

x = R*cos(θ)

y = R*sin(θ)

Then we have:

(7,217pi/180 )

R = 7

θ = (217/180)*pi

x = 7*cos( (217/180)*pi) = -5.59

y = 7*sin( (217/180)*pi) = -4.21

So this point is (-5.59, -4.21) in rectangular coordinates.

And the other point is  (5,-23pi/36 )

R = 5

θ = -(23/36)*pi

x = 5*cos(  -(23/36)*pi ) = -2.11

y = 5*sin(  -(23/36)*pi ) = -4.53

So this point is (-2.11, - 4.53)

Then the point distance between those points is:

D = I (-2.11, -4.53) - (-5.59, -4.21) I

D = I (-2.11 + 5.59, -4.53 + 4.21) I

D = I (3.48, -0.32) I = √( (3.48)^2 + (-0.32)^2) =  3.49

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3 years ago
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OLEGan [10]

Answer:

A pediatricians office tracks the age (in months) in which 25 babies begin to walk

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