If you divide each number by the previous one, you get:
-86 / -172 = 1/2
-43 / -86 = 1/2
-21.5 / -43 = 1/2
The common ratio is 1/2 = 0.5
Answer:
Step-by-step explanation: You are trying to find the chances of someone getting a lemonade when there are 23 lemonades out of 111 drinks. You just have to put the total number of drinks as the denominator and the lemonades as the numerator because you want to find its probability.
Answer:
380 different ways
Step-by-step explanation:
We can solve this problem using a permutation formula, as the order in a group of two students matter.
So, for this problem, we have 20 students and want to form groups of 2, so we have a permutation of 20 choose 2:
P(20,2) = 20! / (20-2)! = 20! / 18! = 20 * 19 = 380 different ways
Another way to solve this problem is:
For the first student being chose, we have 20 students available, and for the second student, we have just 19, as one was already chose, so the number of ways to choose these two students is 20 * 19 = 380
28. 6x+42-20=6x
42-20=0
42-20 gives you 22
22=0
Statement is false
30. -2x-4=-2x-3-1
-2x-4=-2x-4
Statement is true because both sides are identical
32. 2x+8-5=2x+3
8-5=3
3=3
Statement is true for any value of x
34. 3x+(x+4)=18
3x+x+4=18
4x+4=18
4x=18-4
4x=14 (next divide both sides by 4)
x= 7 over 2
7/2
Answer:
g(3) = 10.4
Step-by-step explanation:
g(1)=4
g(n)=g(n-1)+3.2
We need to find g(2)
g(2)= g(2-1)+3.2 = g(1) +3.2 = 4+3.2 = 7.2
Now we can find g(3)
g(3)= g(3-1)+3.2 = g(2) +3.2 = 7.2 +3.2 = 10.4