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Ber [7]
3 years ago
7

If you help I will give you brainiest

Mathematics
1 answer:
Feliz [49]3 years ago
5 0

9514 1404 393

Answer:

  5 miles

Step-by-step explanation:

It may get a bit messy, but we can solve for the desired value directly. Let d = the distance walked (in miles). Then 20-d is the distance traveled in the car. The relevant relation is ...

  time = distance / speed

The total travel time is 9:00 -6:50 = 2:10 = 2 1/6 hours = 13/6 hours. Here is the equation for total travel time.

  total time = time spent walking + time spent riding

  13/6 = (d/3) + (20-d)/30

Multiplying by 30 gives ...

  65 = 10d + 20 -d

  45 = 9d . . . . . . . . . . subtract 20

  5 = d . . . . . . . . . . . . divide by 9

The girl walked 5 miles.

_____

<em>Check</em>

Her walking time was (5 mi)/(3 mph) = 5/3 h = 1:40.

Her riding time was (15 mi)/(30 mph) = 1/2 h = 0:30.

Her total travel time was 1:40 +0:30 = 1:70 = 2:10, as required.

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3 years ago
What is the exact volume of the cone?
victus00 [196]
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_____________________________________________________
Explanation:
_____________________________________________________
Given: radius, "r", equal 7 in.
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The base area of a cone is a circle:  A = π * r²  = π* (7²) = 49π .

(NOTE: Since all answer choices given are in terms of "π" ; we will leave the units in terms of "π").

V = (Based area) * h = (49π  in.) * (4 in.) = (49*4)π  in.³
   =  196π  in.³  ; which is: Answer choice: [D] .
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8 0
4 years ago
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mrs_skeptik [129]

Answer:

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45 to 100 = 55

<u>55</u> = 5<--- Linear

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6 0
3 years ago
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Aaron gets paid 152.80 for 8 hours of work how much does he make per hour ?
Dvinal [7]

To find out how much money Aaron makes an hour, all we have to do is divide

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19.1 x 8 = 152.8

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Hope this helps!

4 0
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