Answer:
First equation : 3, 0, -3, -6
Second equation : 2, 2.5, 3, 3.5
Step-by-step explanation:
What the first equation is basically saying is subtract 3 each time.
What the second equation is basically saying is add 0.5 each time.
Then we just add/subtract to find the first four terms.
So, what is the case in which he uses the least coins? can he use 1 coin? no, there isn't a 35 cent coin. can he use 2 coins? yes! he can use 25+10 cent coins!
now, the largest number of coins means the coins of the smallest value: so using only 5 cent coins. How many would this be?
we have to divide:
35/5=7
so we would use 7 coins.
And the difference is 5: 7-2 is 5.
There is no graph to support the statement and so, this invisible graph is misleading :)
Answer:
3 different choices
Step-by-step explanation:
This problem is a combination problem: She has 3 friends, and we want to know how many groups of 2 friends there are. We can solve this using the combination of 3 choose 2:
C(3,2) = 3!(1! * 2!) = 3*2/2 = 3 possibilities
If we call her three friends A, B and C, the groups that can be formed are:
A and B
A and C
B and C