Answer:
The answer is 
Step-by-step explanation:
Given expression 
we have to simplify the given expression.

Combining like terms, we get
⇒ 
As, 
⇒ 
Step-by-step explanation:
Time Distance
2 3
6 9
10 15
12 18
For triangle a use Pythagorean theorem to find the hypotenuse.
A^2+b^2=c^2
15^2+9^2=c^2
225+81=306
C^2=306
C=17.49 or square root of 306
For b) 18^2+B^2=23^2
324+B^2=529
B^2=205
B=14.32 or square root of 205
Hundredths place because 1.04 you would underline the 0 in the tenths place and round either up to 1.1 if the # is 1.05-1.099. If it is lower it it will just round to 1.0