Answer:
The value of x + y is -16.
Step-by-step explanation:
If each term is calculated by multiplying the previous one times 5 and then subtracting 20 from that result, then we can use that information to relate the first term (x) and the second one (0).
Following the info above, the following equation applies:
0 = 5 x - 20
then we solve for x:
5x = 20
x = 20/5
x = 4
Now we do the same study relating the second term (0) and the third one (y):
y = 5 (0) - 20
y = -20
Now that we have the value for both unknowns, we can estimate what they ask you: The value of x + y:
x + y = 4 + (-20) = 4 - 20 = -16
Answer:
3. about 2 students per year
Step-by-step explanation:
The rate of change would be the difference in the number of students divided by the number of years passed.
So, rate of change = 
= 
So it's around 2 students per year.
I hope this is correct and helps!
Answer:
A
Step-by-step explanation:
Answer:
157 / 110
Step-by-step explanation:
1.42727........
1000x = 1427.2727.......
10x = 14.2727....... ( - )
___________________
990x = 1413
___________________
x = 1413 / 990
x = 157 / 110
Therefore,
1.42727........ in fraction is 157 / 110.
