Answer:
1. 68
2. 22
3. 9
4. 7
Step-by-step explanation:
hahsidijdkejeje
Answer:
True
Step-by-step explanation:
Answer:
There are 253 ways to select 5 participants
Step-by-step explanation:
Total number of volunteers to try a new brand of tennis shoes = 10
Number of volunteers to be selected = 5
We are supposed to find number of ways the research group select 5 participants.
We will use combination:
Formula:
Substitute n = 10 and r = 5
So,

Hence There are 253 ways to select 5 participants
Answer:
x=5, x=-9
Step-by-step explanation:
I am assuming the "x+1" is squared since there is more than one answer.
x+2=7
x+2=-7
x=5, x=-9
Find slope (y2-y1)/(x2-x1)
Pick any two points on line
(1,15) and (2,25)
(25-15)/(2-1) = 10/1, slope is 10 (rate of change)
Y = 10x + b
15 = 10 + b
The y intercept would be 5