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Anna35 [415]
3 years ago
7

Delete this question please. I don't know how to delete this question.

Mathematics
1 answer:
Serhud [2]3 years ago
8 0
I don’t think you can delete questions
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A bus traveled on a level road for 4 hours at an average speed of 20 miles per hour faster than it traveled on a winding road. T
Kruka [31]

To solve this problem, we must recall that the formula for velocity assuming linear motion:

v = d / t

Where,

v = velocity

d = distance

t = time

 

For condition 1: bus travelling on a level road

v1 = d1 / t1

<span>(v2 + 20) = (449 – d2) / 4                        --->1</span>

 

For condition 2: bus travelling on a winding road

v2 = d2 / t2

<span>v2 = d2 / 5                                            --->2</span>

 

Combining equations 1 and 2:

(d2 / 5) + 20 = (449 – d2) / 4

0.8 d2 + 80 = 449 – d2

1.8 d2 = 369

d2 = 205 miles

 

Using equation 2, find for v2:

v2 = 205 / 5

v2 = 41 mph

 

Since v1 = v2 + 20

v1 = 41 + 20

v1 = 61 mph

 

Therefore <span>the average speed on the level road is 61 mph.</span>

4 0
3 years ago
Someone please help !
IceJOKER [234]

Looks like 7 games scored 73 or 74, 1 scored 75 or 76 and 1 scored 77 or 78, so

Answer: 9 games, second choice

8 0
3 years ago
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A polygon is broken up into 5 non-overlapping triangles by drawing lines from one vertex to all other non-adjacent vertices. Wha
pshichka [43]
C. Heptagon 

Just took the test on edgen.....
5 0
3 years ago
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Hellp pleaseeeeeeee....
kherson [118]
2/16 cause you evaluate the exponents to their power
4 0
3 years ago
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Please solve thissssss 5x + 3x = 28
katrin2010 [14]

Answer:

x= 3.5

Step-by-step explanation:

5x + 3x = 28

8x = 28

x = 28/8

x = 3.5

7 0
3 years ago
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