Answer:
a=25
Step-by-step explanation:
a-15+4=14
a-15=14-4
a-15=10
a=10+15
a=25
We are asked to determine how many marbles must be in the seventh line but the condition stated in the problem must be followed such that "starting with a number in every consecutive line it has a number one more than the previous line".
We start with 3, followed by 3+1 = 4, followed by 4+1=5, followed by 5+1=6, followed by 6+1=7, followed by 7+1=8, followed by 8+1=9
The sequence is:
3,4,5,6,7,8,9
In the seventh, there are 9 total marbles.
Answer:
32
Step-by-step explanation:
35/8=140/x, x=32
So, since it is continuously, we need to think of PERT
So, we just plug our numbers in to solve for T
It will take 15.479 years
She charges $15 extra for each hour increased.
15+15=30 ,30+15=45, 45+15=60.
$15 is the unit rate.