Answer:
by applying Pythagoras theorem;
the ladder(13m) acts as hypotenuse
the wall (12m) acts as height
the distance between the the two is the base
therefore
a² + b² = c²
b²= c²- a²
b²= 169 - 144
b² = 25
√b² = √25
b= 5m
the distance is 5m
To multiply decimals pretend there is no decimal for example
.165*74 = 12210; then however many digits (not counting zeros) is after the decimal added together (from both numbers) so 3 so 12.21 is the answer
Answer:

Step-by-step explanation:
Let us suppose that We have X number of dimes
Now from Monetary rules we know that
1 dime = 10 cents ............(i)
Now if we will have
2 dime = 20 cents
2 dime = 2 * 10 cents .....(ii)
from (i) and (ii) we see that if we have X dimes then

The derivative of (x+1)^2, for this you use the chain rule, to get 2x+2.