Jodie ran at an average speed of 10 km/h for 15 minutes. How far did she run in km?

Mathematics

2 answers:

laiz [17]2 years ago

5 0

Answer:

2.5 km

Step-by-step explanation:

15 minutes is

15 minutes * 1 hour/ 60 minutes = 1/4 hour

15 minutes = 1/4 of an hour

10 km/ hour * 1/4 hour = 10/4 km = 2.5 km

krek1111 [17]2 years ago

4 0

Answer:

In total she ran 2.5km/h in 15 minuets.

Step-by-step explanation:

Since 15 minuets is a quarter of an hour you can divide the 10km/h by 4 to get 2.5km/h.

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If y-3x=9, 7x+y=25, what is the value of x and y?

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$\bold{\rm{Given}}\text{ : If y - 3x = 9, 7x + y = 25, what is the value of x and y}?$

$\bold{\rm{Solution}} \text{: We'll solve this by substitution method}$

$\dashrightarrow y - 3x = 9 \\ \\ \dashrightarrow \boxed{y = 9 + 3x } \qquad .. \sf eq(1)$

$\text{we got the value of y now getting the value of x}$

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