Answer:
x=7
Step-by-step explanation:
Step 1- simplify both sides of the equation
step 2- add 9 to both sides
step 3- divide both sides by 27
final answer will get you x=7
have good day ((:
D = 20
.....................................
x = √149 km
Pythagorean theorem
x^2 = 10^2 + 7^2
x^2 = 100 + 49
x^2 = 149
x = √149
Answer- number D
