Let

represent the number of feet that the balloon rises in the

minute.
so

ft , means that in the 1st minute, the balloon rose 40 feet

ft, means : in the 2nd minute the balloon rose 60 feet

we notice that each minute, the balloon rises a multiple of 20, feet:

so it is clear that

during the 15th minute the balloon rises

(feet)
Answer: 320
Answer:
B is the wrong one
Step-by-step explanation:
-7 is less than -9
Answer:
(5−6)2+(−15+12)2=(5−2)2+(−15+14)2
Step-by-step explanation:
Circle equation is : (x -h)^2 + (y - k)^2 = r^2
center (h, k) = (5, -15)
r = Distance from (5, -15) to point A (2, -14)
r = root ( (5 - 2)^2 + (-15 - (-14))^2 )
r = root ( 3^2 + 1^2)
r = root(10)
Equation is (x - 5)^2 + (y + 15)^2 = 10
Check point P(6, -12)
(6 - 5)^2 + ( (-12) + 15 )^2 check if this equals 10
1^2 + 3^2 = 1 + 9 = 10, 10 = 10 good
It is the same as using the equation:
(5−6)2+(−15+12)2=(5−2)2+(−15+14)2
It would be: 3/7-1/14 = 6-1 / 14 = 5/14
So, 5/14 is your answer..........