Step-by-step explanation:
4 times 3x+2 subtracted by9
hope it helps
Answer:
12x-1
Step-by-step explanation:
First, you would have to distribute. Would mean to multiply the 4 with every number in the parenthesis.
4(3x+2)-9
12x+8-9
Now combine like terms
8-9 = -1
The answer is 12x-1
Answer:
$60
Step-by-step explanation:
Method 1
We want to know how much money Roman originally has considering if he spends $15, then he has of the original amount left. So,
We know that = 15 so = 30 and double that will get 60 so 60 is the original amount
Method 2
Lets call the original amount 'x'
If he spends $15 he has of the original amount so,
x = 15
In an equation our aim is to find the value of what we are looking for as well as keeping the equation balanced. For example if we divided 15 only from one side then the equation would change so it's an important rule to keep in mind when solving equations, that you need to keep both sides of the equation the same.
x = 15
→ Multiply both sides by 4 to isolate x
x = 60
So $60 was the original amount
Answer:
The general formula for nth term of given sequence is:
Step-by-step explanation:
Given sequence is:
54,18,6.....
In order to write the general formula of a sequence, first of all the common ratio has to be found. Common ratio is the ratio between consecutive terms of a geometric sequence.
The general formula is:
Putting the values of a1 and r
Hence,
The general formula for nth term of given sequence is:
Answer:
The volume of the sphere is
Step-by-step explanation:
we know that
The volume of the sphere is equal to
we have
-----> the radius is half the diameter
assume
substitute