2 years ago

Harry cycles 8 kilometres in 30 minutes. Calculate his average speed, in km/h

Mathematics

2 answers:

aksik [14]2 years ago

7 0

Answer:

16km/h

Step-by-step explanation:

average speed = total distance traveled / total time taken

30 min = 0.5 h

8/0.5 = 16km/h

Lerok [7]2 years ago

4 0

8 km / 0.5 hr
= 16 km/h

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Which equation is the direct variation equation if f(x) varies directly with x and f(x)=-18 when x=3

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$\bf \qquad \qquad \textit{direct proportional variation}\\\\
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\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=-18\\
x=3
\end{cases}\implies -18=k3
\\\\\\
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