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Nataliya [291]
3 years ago
13

Student walks 2 km in 30 minutes. What is the student’s average speed in km/h?

Mathematics
2 answers:
solong [7]3 years ago
6 0

Answer:

4km/h

Step-by-step explanation:

30 minutes = ½ an hour

you want the units to be in km/hour

2÷½=4km/h

JulijaS [17]3 years ago
4 0

Answer:

1 km per minute

Step-by-step explanation:

Divide 30 by 2

you get 15

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Solve the compound inequality 7x > –35 and 3x ≤ 30.
docker41 [41]

Answer:

x>-5 x ≤10

Step-by-step explanation:

-35/7=-5

7x/7=x

3x/3=x

30/3=10

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2 years ago
What is the common difference, d, in the arithmetic sequence defined by the formula below? an=2n+1
marishachu [46]
<h3><u>Answer:</u></h3>

  • d = 2

<h3><u>Solution:</u></h3>

We are given that the arithmetic progression is defined by :

➝ 2n + 1

<em>Therefore, </em>

  • <u>For </u><u>first </u><u>term</u>

➙ n = 1

➝ 2 × 1 + 1

➝ 2 + 1

➝ 3

  • <u>For </u><u>second </u><u>term</u>

➙ n = 2

➝ 2 × 2 + 1

➝ 4 + 1

➝ 5

  • <u>Common </u><u>difference</u>

➙ 2nd term - 1st term

➝ 5 - 3

➝ 2

<h3><u>More </u><u>information</u><u>:</u></h3>

  • The difference between the successive term and the preceding term is the difference of an arithmetic progression. It is always same for the same arithmetic progression.

5 0
2 years ago
A tortoise and a hare are competing in a race around a 1600-meter track. The arrogant hare decides to let the tortoise have a 78
Sindrei [870]
I am presuming that the question is who won or by how much did the winner win. 

distance equals rate times time, or d = r*t
For the Hare d = 1600 and r = 10
   1600 = 10 t 
Divide both sides by 10 
t = 160
The hare finished in 160 seconds

For the tortoise d = 1600 - 780 = 820 (due to the head start) and r = 5.3
820= 5.3 t
Divide both sides by 5.3
t = 154.72 (rounded to the hundredths place)

The tortoise won by 5. 28 seconds (160-154.72)
 
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3 years ago
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There are two van accessible parking spaces for every 50 parking spaces available in a mall. If there are 200 parking spaces in
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Answer:

6

Step-by-step explanation:

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3 years ago
What is the number of degrees of rotational symmetry for a parallelogram?​
In-s [12.5K]

Answer:

A parallelogram has 180 degrees of rotational symmetry

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3 years ago
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