1 call a is 90 miles from town B and 18 miles from town C-Town a B and C are forming a right triangle at a a road connecting Town B and C directly find the length of the road

120.41 miles.

Step-by-step explanation:

Given:

A is 90 miles from town B and 18 miles from town C-

Town a B and C are forming a right triangle at a a road connecting Town B and C directly.

Question asked:

Find the length of the road that means longest side of the triangle, BC = ?

Solution:

AB = 90 miles

AC = 80 miles

BC = ?

As we know:

By Pythagoras Theorem:

Taking root both sides;

Thus, length of the road is 120.41 miles.

whats the question?

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.