Question

Need help please...​

Answer 1

Answer:

$\sf 28 \frac{1}{3} \:ft=28.3\:ft\:(nearest\:tenth)$

Step-by-step explanation:

Given information:

• It takes Mr Kelly 6 strides to walk 20 ft.
• It takes Mr Kelly 8.5 strides to walk the other side of his house.

Let x be the unknown length of the other side of Mr Kelly's house.

To solve, set up a ratio with the given information and the defined unknown, then solve for x:

$\textsf{20 ft : 6 strides = x ft : 8.5 strides}$

$\implies \sf 20:6 = x:8.5$

$\implies \sf \dfrac{20}{6}=\dfrac{x}{8.5}$

$\implies \sf x=\dfrac{20 \cdot 8.5}{6}$

$\implies \sf x=\dfrac{170}{6}$

$\implies \sf x=28 \frac{1}{3} \:ft$

$\implies \sf x=28.3\:ft\:(nearest\:tenth)$

Therefore, the length of the other side of Mr Kelly's house that takes him 8.5 strides to walk is 28.3 ft (nearest tenth).

Answer 2

Let that be x

• 20:x=6:8.5
• 20/x=6/8.5
• 20/x=12/17
• 12x=17(20)
• 12x=340
• x=340/12
• x=28.3ft