Solution:
we are given that
In a class, every student knows French or German (or both).
15 students know French, and 17 students know German.
Suppose there are x student who knows both French and German.
Then Total number of student in the class will be 
But to guess the largest possible number of student in the class we can assume x=0
Hence the largest Possible number of Student in the class=32
X + 4 > -15
x > -15 - 4
x > -19
The answer is: x > -19.
Answer:
70 routes are possible
Step-by-step explanation:
Here, we want to find the number of possible routes
Since samples must be taken at four locations from a possible 8; then the number of possible routes will be 8 C 4
= 70 routes
anaalyze the problem
first term: -1
common difference: +9 (8-(-1) is 9)
so, an=-1+9n-9
answer is an=9n-10, with n bigger or equal to one
sixth term,plug in 9(6)-10=54-10=44
tenth term, plug in 9(10)-10=90-10=80
Answer:
3/8 of 24 is 9
9 are sharpened so 24-9=15
15 pencils are not sharpened.
