Answer:
L.C.M of 15 and 30 is 30.
Answer: The result is one half (
)
Step-by-step explanation:
We have the following expression:
Since both fractions have the same denominator, we can just add both numerators and keep the denominator:
Dividing numerator and denominator by 
:
This is the result
Act like it's a whole circle and find the perimeter, then divide by 2.
P = 2 * pi * r
P = 2 * 3.14 * 9
P = 56.52
Now divide by 2:
P = 28.26
I'm assuming your teacher wants you to distribute. If so, then you multiply the outer term 8 by each term inside (3a and 5). After that you add.
8 times 3a = 24a
8 times 5 = 40
So 8(3a+5) becomes 24a+40
We do not combine 24a and 40 as they are not like terms. So we leave 24a+40 as it is.
