8*10 squared as a decimal would be 2.8
Answer:
The submarine is 10.4 km far from its base.
Step-by-step explanation:
Given that:
Distance traveled east = 7km
Distance traveled north = 12.5 km
This is will form a right triangle, where the distance from east to north is hypotenuse.
Here,
a = 7 , b = x and c = 12.5
Using Pythagorean theorem,

Taking square root on both sides

Hence,
The submarine is 10.4 km far from its base.
Answer:
its 76.8
Step-by-step explanation:
Answer:
x=6.67
Step-by-step explanation:
knowns:
both angles are equal to each other
so:
7x-15=4x+5
3x=20
x=20/3
x=6.666