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marissa [1.9K]
4 years ago
12

Cheyenne ran a 6.36-kilometer race in 53 minutes. What was her speed in kilometers per hour?

Mathematics
2 answers:
Ksenya-84 [330]4 years ago
8 0

Answer: 7.2 kilometers per hour

Step-by-step explanation:

Given:

Distance: 6.36km

Time: 53 minutes

Note: To find her speed, you need to divide the distance by the time.

Step 1: Convert it to kilometers per hour.

  6.36 kilometers             60 minutes

= -----------------------  x  ---------------------------

       53 minutes                    1 hour

     

    381. 6

= ------------

       53

=  7.2 kilometers per hour

Other way to find answer:

Step 1: Determine how many kilometers per minute

6.36 ÷ 53 = 0.12 kilometers per minute

Step 2: Multiply by 60 to find how many hours per hour (Note: 1 hour = 60 minutes)

0.12 x 60 = 7.2 kilometers per hour

svlad2 [7]4 years ago
5 0

Answer:

7.23km/h

Step-by-step explanation:

Speed = distance/time

Given

distance = 6.36km and

Time = 53minutes

Convert 53minutes to hour.

60 minutes = 1 hour

53 minutes = x hour

Cross multiply

X hour x 60 = 53

Xhour = 53/60

X = 0.88 hour

Therefore

Speed = 6.36km /0.88hr

= 7.23km/h

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What is 5kg in the ratio of 7:3
cluponka [151]

Answer:

5000/750 = 20:3

Step-by-step explanation:

5kg = 5000g

5000:750 (divide by 10)

500:75 (divide by 5)

100:15 (divide by 5)

20:3

8 0
3 years ago
An amphitheater charges $74 for each seat in Section A, $59 for each seat in Section B, and $28 for each lawn seat. There are th
Ivenika [448]

Answer:

<h2>(4x+z)=13000------1</h2><h2>(4x+z)13000=503000----2</h2>

Step-by-step explanation:

let x be the number of seats in A,

y be the number of seats in B, and

z be the number of lawn seats.

y=3x

the total number of seats is given by

(x+y+z)=13000

put y=3x

(x+3x+z)=13000

(4x+z)=13000------1

also

(4x+z)13000=503000----2

hence the systems of equation is

(4x+z)=13000------1

(4x+z)13000=503000----2

7 0
3 years ago
Answer??? please answer
Aliun [14]

Answer:

∠ 1 = 94°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

130° is an exterior angle of the triangle, then

∠ 1 + 36° = 130° ( subtract 36° from both sides )

∠ 1 = 94°

5 0
3 years ago
Read 2 more answers
Can someone please help me!! And can you show your work
Debora [2.8K]

Answer:

1) 8.073 (multiply 0.621 by 13km)

2)1,320,000,000(5280ft times 250,000)

3)37.850(10,000 divided by 264.2)

4)4hrs

5)157680000

(60 seconds in one minute and 60 min in one hr so 60 times 60 =3600 in one hr. then multiply 3600 by 24 for the entire day which is 86400sec. Then multiply that day by 365 which is 31536000 times 5 years which gets us our total of 157680000 seconds.

6) 758000 L

1 gal = 3.79 L so we have to multiply 3.79 times 200,000 which gets us 758000

Step-by-step explanation:

1) To get this answer we need to find out how many miles are in one kilometer. 0.621 mile is 1 km so we need to put 13 for km which will get 8.073 miles. SO the answer is 8.073

2) we need to find how many feet are in a mile. 1 mile= 5,280. so 5280 times 250,000 = 1320000000  

3) 264.2 gal= 1 cubic meter so 10,000/264.2= 37.850

4) 1 hr= 60 min = 4hrs and 58 minutes roughly

5) 60 sec is 1 minute= so 60 times 60(the minutes in

4 0
3 years ago
Solve the equation m=2n-p
allsm [11]

Here is your answer:


Move all terms with m to the left, all other terms to the right:


m + 2n + -2n = -2n + p

Combine like terms:

2n + -2n = 0

m + 0 = -2n + p

Which would equal "m = -2n + p" after you simplify.


Hope this helps!


~Nonportrit

3 0
3 years ago
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