Answer: The three different equations will be

Step-by-step explanation:
We have to write three equation that have x = 5 as a solution:
1) First equation will be

2) Second equation will be

3) Third equation will be

Hence, the three different equations will be

Answer: 8.808 kilometers
Step-by-step explanation: have a good night :)
Answer:
see explanation
Step-by-step explanation:
(a)
(the side required )² = sum of squares of other 2 sides - ( 2 × product of other 2 sides and cos(angle opposite side required ) )
x² = 12² + 15² - (2 × 12 × 15 × cos71°)
(b)
x² = 144 + 225 - 360cos71°
= 369 - 360cos71° ( take square root of both sides )
x = 
≈ 16 cm ( to the nearest integer )