Question

help

Answer 1

ah ok -- we have to create a proportion, to find \(d\)

Answer 2

so by looking at the image i drew, we can create this proportion:
\[ \frac{15}{18} \times \frac{10}{x}\]
cross multiply, and you will have an answer

Answer 3

so by cross multuplying we get \( 15 \times x = 10 \times 18 \Rightarrow \color{lightskyblue}{x}= \frac{10 \times 18}{15} \)

\( \color{lightskyblue}{x}= \frac{180}{15} \)

use the calculator